Animal Tissues

Summary

This script delves into the four fundamental types of human body tissues: epithelial, muscular, connective, and nervous. It explains the roles of each tissue, from the protective epithelial layers to the dynamic muscular tissues that power movement. The script also highlights the importance of connective tissues like bones and blood, and the intricate workings of the nervous system, emphasizing the coordinated complexity that enables life's functions.

Takeaways

• 🧬 Humans and animals are composed of four primary types of tissues: epithelial, muscular, connective, and nervous tissue.
• 👀 Epithelial tissue acts as a protective covering for organs and cavities, with various classifications including simple squamous, cuboidal, and columnar, as well as stratified types.
• 🔍 Simple squamous epithelium is found in areas requiring a thin barrier, such as blood vessels and lung alveoli, while stratified squamous epithelium is crucial for skin durability.
• 💪 Muscular tissue is responsible for movement and comes in three varieties: skeletal, smooth, and cardiac, each with distinct structures and functions.
• 🏋️‍♂️ Skeletal muscles are voluntary and show striations, while cardiac muscles are involuntary, rhythmically contract, and have intercalated discs for electrical impulse transfer.
• 🦴 Connective tissue encompasses a wide range, including blood, bones, and various types of matrices that provide support and connection throughout the body.
• 🩸 Blood is a connective tissue that transports oxygen and nutrients, with red blood cells containing hemoglobin which gives blood its red color.
• 🦴 Bones provide the body's framework and reduce from 300 in infants to 206 in adults, with the feet containing a significant number of these bones.
• 🤝 Ligaments and tendons are types of connective tissue that connect bones to each other and muscles to bones, respectively, with different levels of elasticity.
• 🧠 The nervous system, composed of the brain and spinal cord, is made up of neurons and glial cells, which transmit electrical signals for communication within the body.
• 🧠 Neurons have a unique structure likened to a tree, with dendrites, an axon, and axon terminals, facilitating the transmission of information through synapses.
• 🤹‍♂️ The nervous and muscular tissues work in harmony, with the nervous system controlling muscle movement and the muscular system enabling physical actions.

Q & A

What are the four basic types of tissues in the human body?

The four basic types of tissues in the human body are epithelial tissue, muscular tissue, connective tissue, and nervous tissue.

What is the primary function of epithelial tissue?

Epithelial tissue primarily serves as the covering and protecting layer of various organs and cavities within the body, forming a barrier to keep different body systems separate.

What does the term 'squamous' in the context of epithelial cells refer to?

Squamous refers to a type of epithelial cell that is thin and flat, resembling scales, and is found in places where a very thin barrier is needed, such as blood vessels or lung alveoli.

What is the difference between simple and stratified epithelial tissues?

Simple epithelial tissues consist of a single layer of cells, while stratified epithelial tissues consist of multiple layers, providing additional protection and the ability to withstand wear and tear.

What are the three types of muscular tissues and their primary locations?

The three types of muscular tissues are skeletal muscle (attached to the skeleton), smooth muscle (found in the walls of organs like the iris of the eye and bronchi in the lungs), and cardiac muscle (found in the heart).

How does the structure of cardiac muscle differ from skeletal muscle?

Cardiac muscle cells are branched, cylindrical, and have a single nucleus with intercalated discs that facilitate electrical impulses for rhythmic contractions, unlike skeletal muscle cells which are long, cylindrical, unbranched, and multinucleated.

What is the most important function of blood in the body?

The most important function of blood is transportation, particularly of oxygen to every cell in the body.

Why is the brain particularly susceptible to damage related to oxygen deprivation?

The brain is susceptible to oxygen deprivation because it uses 20% of the oxygen that enters the bloodstream, despite making up only 2% of the body mass.

How does the number of bones in the human body change from birth to adulthood?

Babies are born with 300 bones, but by adulthood, this number reduces to 206 as some bones fuse together during growth.

What are the two main components of the nervous system?

The two main components of the nervous system are the brain and the spinal cord.

What is the role of glial cells in the nervous system?

Glial cells support and insulate neurons, supply them with nutrients and oxygen, and help protect them by destroying pathogens.

Outlines

00:00

🧬 Epithelial Tissue: Our Body's Protective Covering

The first paragraph introduces the concept of epithelial tissue, which acts as the body's protective barrier and lining for various organs and cavities. It explains that epithelial tissues can be simple or stratified, with different shapes like squamous, cuboidal, and columnar, each serving specific functions. The paragraph delves into the roles of these tissues, such as providing a permeable surface for substance transport in blood vessels and lung alveoli, and protecting delicate linings in the esophagus and mouth. It also touches on the unique structure of pseudostratified epithelium found in the lungs and emphasizes the importance of epithelial tissues in maintaining the body's integrity and function.

05:03

💪 Muscular Tissue: Powering Movement and Expression

This paragraph focuses on muscular tissue, highlighting its role in movement and the unique contractile proteins that enable it. It distinguishes between three types of muscle tissues: skeletal, smooth, and cardiac. Skeletal muscles are voluntary and striated, aiding in deliberate movements, while smooth muscles are involuntary and control functions like blood vessel contraction and eye dilation. Cardiac muscles, found in the heart, are responsible for its rhythmic contractions. The paragraph also includes a quiz about the strongest muscle in the body, which is the tongue, and discusses the importance of muscles in facial expressions and overall health.

10:04

🩼 Connective Tissue: The Body's Supportive Framework

The third paragraph explores connective tissue, which includes a variety of substances that connect and support the body's structures. It discusses blood as a type of connective tissue, emphasizing its role in oxygen transportation and the importance of red blood cells containing hemoglobin. The paragraph also covers other connective tissues like bones, which provide the body's framework and support, ligaments and tendons, which connect bones to each other and muscles, respectively, and cartilage, which offers flexibility in areas like the nose and ears. It concludes with a look at softer connective tissues like arol tissue and adipose tissue, which play roles in repair and insulation, respectively.

15:04

🧠 Nervous Tissue: The Communication Network of the Body

The final paragraph delves into nervous tissue, which forms the body's complex nervous system, including the brain and spinal cord. It explains the function of the nervous system in decision-making and communication through electrical signals. The paragraph describes neurons and glial cells, the primary components of nervous tissue, detailing their structures and functions. Neurons are depicted as the communication links, while glial cells are portrayed as supportive, providing nutrients, insulation, and protection. The paragraph concludes by illustrating how nervous tissue works in harmony with muscular tissue to facilitate movement, emphasizing the intricate coordination of different tissues in the body.

Keywords

💡Epithelial Tissue

Epithelial tissue is a type of cellular covering that lines the surfaces of the body and internal organs. It is crucial for protection and selective permeability, allowing substances to pass through while keeping others out. In the video, it is mentioned that epithelial tissue covers most organs and cavities, forming a barrier to keep different body systems separate, such as the skin, the lining of the mouth, and the blood vessels. The script also describes different types of epithelial cells based on their shape and layering, like squamous, cuboidal, and columnar, each serving specific functions.

💡Connective Tissue

Connective tissue is a diverse group of tissues that provide support, connection, and structure to the body. It includes various types such as bone, cartilage, and adipose tissue. The video script explains that connective tissue is involved in transportation, as seen in blood, which carries oxygen and nutrients throughout the body. It also discusses the composition of blood, including red blood cells (RBCs), white blood cells (WBCs), and platelets, all of which are part of the connective tissue system.

💡Muscular Tissue

Muscular tissue is responsible for movement and is composed of cells that have the ability to contract and relax. The video describes three types of muscular tissues: skeletal, smooth, and cardiac. Skeletal muscles are under voluntary control and are attached to the skeleton, as illustrated by the script's mention of the muscles in the arms and legs. Smooth muscles are involuntary and control the movement of substances in organs like the digestive tract, while cardiac muscle is found in the heart and is responsible for its rhythmic contractions.

💡Nervous Tissue

Nervous tissue is essential for communication within the body and is composed of neurons and glial cells. The video script highlights the nervous system's role in sending and receiving stimuli and transmitting electrical impulses. Neurons are described as having a cell body, dendrites, an axon, and axon terminals, which facilitate the transfer of information through synapses. Glial cells support and insulate neurons, playing a critical role in the nervous system's function.

💡Stratified Epithelium

Stratified epithelium is a type of epithelial tissue that consists of multiple layers of cells. The video script explains that stratified epithelium is found in areas where the body needs to withstand wear and tear, such as the skin. It is also mentioned that stratified epithelium can be of different cell types, such as squamous, cuboidal, and columnar, each serving a specific function in the body.

💡Squamous Cells

Squamous cells are a type of epithelial cell that are flat and scale-like in appearance. They are found in areas where a thin barrier is needed, such as the lining of blood vessels and lung alveoli. The script uses the term 'squamous' to describe a simple layer of these cells, emphasizing their permeability and delicate lining function.

💡Cuboidal Cells

Cuboidal cells are epithelial cells that are cube-shaped and are found in locations where mechanical support is important, such as the lining of kidney tubules and ducts of salivary glands. The video script mentions these cells in the context of providing structural support to these organs.

💡Columnar Cells

Columnar cells are tall and cylindrical epithelial cells that line certain body cavities and tubes. The video script describes them as part of the stratified epithelium, particularly in the context of pseudostratified columnar epithelial cells found in the lungs, which have a unique arrangement that gives the appearance of stratification.

💡Glial Cells

Glial cells, also known as neuroglia, are non-neuronal cells in the nervous system that support and protect neurons. The video script explains that glial cells are more numerous than neurons and perform various functions, including supplying nutrients and oxygen to neurons, insulating neurons, and playing a role in immune defense.

💡Synapse

A synapse is a junction between two neurons where information is transmitted as electrical impulses. The video script describes the synapse as the location where neurons 'high jump' information from one to another, emphasizing the importance of this structure in the nervous system's communication.

💡Pseudostratified Epithelium

Pseudostratified epithelium is a type of epithelial tissue that appears stratified but is actually composed of a single layer of cells. The video script mentions this term in the context of cells in the lungs that have a unique shape, with some cells wider at the bottom and narrower at the top, creating a misleading appearance of stratification.

Highlights

The human body is primarily composed of four types of tissue: epithelial, muscular, connective, and nervous tissue.

Epithelial tissue acts as the body's covering and protective layer, including the skin and linings of organs and cavities.

Epithelial tissues are classified into simple and stratified types based on the number of cell layers.

Squamous epithelial cells, resembling scales, are very soft and found in areas requiring a thin barrier, such as blood vessels and lung alveoli.

Cuboidal and columnar epithelial cells have distinct shapes and functions, with cuboidal cells providing mechanical support in kidney tubules and salivary glands.

Stratified epithelial tissues, with multiple layers, are found in the skin to withstand wear and tear, and in the lining of the mouth and esophagus.

Pseudostratified epithelium, misleading in appearance, is found in the lungs and has specialized functions.

Muscular tissue is responsible for movement and comes in three varieties: skeletal, smooth, and cardiac muscle.

Skeletal muscles are voluntary and show striations under the microscope, while smooth muscles control involuntary movements without striations.

Cardiac muscle, found in the heart, has a unique structure with intercalated discs for electrical impulse transmission.

The tongue is identified as the strongest muscle in the body relative to its size, playing a crucial role in speech and swallowing.

Connective tissue encompasses various substances including bones, blood, and fat, serving diverse functions in the body.

Blood's red color is due to hemoglobin in red blood cells, which is responsible for transporting oxygen throughout the body.

The brain, despite its small size relative to body mass, consumes the most oxygen, highlighting its high metabolic demand.

Bones provide the body's framework and reduce in number from birth to adulthood due to fusion.

Ligaments and tendons are types of connective tissue that connect bones to each other and muscles to bones, respectively.

Adipose tissue serves as a cushion and insulator within the body, with unique cellular structures filled with fat globules.

Nervous tissue forms the nervous system, with neurons and glial cells playing critical roles in transmitting and supporting electrical signals.

Glial cells, despite being less recognized, are more abundant than neurons and provide essential support and protection for them.

The nervous system's coordination with muscular tissue is fundamental to movement, showcasing the body's intricate design.

Transcripts

although we animals are such a bunch of

complicated creatures we are basically

made up of just four types of tissue

epithelial tissue muscular tissue

connective tissue and nervous tissue now

first up is the epithelial tissue you

can think of them as the Thin packing or

covering material of pretty much

everything in our body so if you look at

yourself in the mirror most of what you

see is epithelial tissue so what are

they they are the covering and and

protecting tissues of our body

epithelium covers most organs and

Cavities within the body it also forms a

barrier to keep different body systems

separate so that they can go about their

own function without interfering in

other organ system functions the skin

the lining of the mouth the lining of

the blood vessels the lung alveoli

kidney tubules all of these are made of

epithelial tissue they are again

classified based on how many of them are

there together that is how many layers

are there and how they look now based on

how they look they can be just three of

them very very simple very very easy

they can be like a line they can be like

a cube or they can be like a cylinder

that's it only the one which looks like

a line has a funny name a weird name

actually more than funny

squamous squamous you must be wondering

what on Earth were they thinking I was

also thinking the same thing but uh you

know I realized that SAS has come from a

Latin word

Squam which means the scale of a fish or

a serpent and true to the name they look

like scales just that they aren't that

hard in fact they aren't hard at all

they are very very very soft the other

two have very obvious names cuboidal and

columnar now if you just put a single

layer it's called Simple and if you put

many layers no it's not called

complicated hold on it's called

stratified so simple and stratified

let's do some permutations and

combinations and then you have met every

kind of epithelial cells there is to

meet okay quiz time what's the first one

I'm sure you'll get this it's simple SAS

simply because there is one layer of

Schamus epithelial cells and this one

simple columnar single layer columnar

cells and this one simple cuboidal you

see where I'm getting I'm sure you are

okay what about this one there's more

than one layer so it's stratified what

is the type of cells cuboidal so

stratified cuboidal cells next what

about this this one is also simple many

layers so stratified and type of cells

squas so stratified squalus or squamous

stratified and I've saved the best one

for the last this one is tricky so pay

tension this looks neither simple nor

stratified some cells are wider at the

bottom and narrower at the top while

other cells are narrow at the bottom and

wider at the top it's like they're

faking it right they are faking

stratified epithelium or they're half

stratified epithelium you might have

heard the word pseudo before it means

misleading or deceptive and that's

exactly their mean Pudo stratified

epithelium and they are found in the

lungs and they have some Celia on it

they have an awesome name for that too

pseudostratified cated columnar

epithelial cells wow okay now that you

know how they look you need to

understand what they do they all look

their different special ways for a

reason right so let's understand that

simple squamous for example is found in

cells lining blood vessels or lung

alveoli where transportation of

substances has to happen through a

permeable surface that is in places

where you need a very very very thin

barrier and where else are they found

whenever you need a delicate lining the

esophagus and the lining of the mouth

are also covered with squamous

epithelium now the skin which protects

the body so nicely is also made up of

squamous epithelium but not one layer of

spus epithelium since your body sheds

skin yes it does you just cannot see it

because the particles are way too small

epithelial cells are arranged in many

many layers to prevent bear and tear

around 600,000 particles of skin get

shed every hour you logically cannot

keep regenerating a single layer of spus

eal cells right so here you will have

yes you'll have stratified squamous

epithelial cells so these multiple

layers ensure that the skin can

withstand normal wear and tear you can

actually you know gently very gently

scrape the inner side of his cheek stain

it and observe it under the microscope

you'll find stratified scus epithelial

cells okay where would you find cuboidal

cells in the lining of kidney tubules

and ducts of salivary glands where

mechanical support becomes important now

epithelial cells can graduate further

earn themselves another degree and

specialize themselves to form glands

sometimes a portion of the epithelial

tissue folds Inward and a multicellular

gland is formed this is glandular

epithelium now a gland is an organ which

just gives out stuff the stuff that it

gives out can either be retained inside

the body or secreted outside the body

like salivary glands where saliva goes

out and sweat glands where sweat goes

out these are perfect examples of glands

which secrete substances outside the

body next up muscular tissue when you

think muscular you think movement well

you also conjure up images of Ric ran or

ar or swash and Egger taking care of the

bad guys and you're right a hell lot of

muscle tissue in your biceps and your

triceps will take you closer to the

arnal swash and egar look now you may

already know this it's easier to be

happy it takes 17 muscles to smile and

43 to frown unless you're trying to give

your face you know a workout smiling is

a much easier option for most of us

anyone who's ever scared or frown for a

long period of time knows just how

tiresome it is and how it doesn't do

anything to actually improve your mood

okay so there's something very special

about the muscles they contain an

exclusive protein which helps in

movement these are called contractile

proteins these contract and relax and

then they cause movement contractile

proteins okay muscular tissue comes in

three varieties and they have very very

obvious names one skeletal muscle so

where are they found yes they're

attached to the bones of the body or the

skeleton of the body now these are

muscles that move when you want them to

move they help you make a voluntary

movement and are called voluntary

muscles if I were to skip and jump in

front of you it would be completely

voluntary though totally weird and is a

perfect example of my skeletal muscles

in motion in fact fact you use 200

muscles to take one step that's a lot of

work for the muscles considering that

most of you take about 10,000 steps a

day and if you're not taking 10,000 at

least 10,000 steps a day you're spending

way too much time in front of the TV or

the computer go out and play go on okay

so now back to how skeletal muscles look

how exactly do they look when you stain

them and look at them under the

microscope some striations or B hands

can be seen that's why they're also

called stried muscles the cells in the

muscles are long cylindrical unbranched

and multinucleated multinucleated means

having many nuclei that's all once you

have a nice meal the movement of food

through the digestive tract is the last

thing you need to think about right

that's because our body is so welld

designed that it does it on its own so

if I'm to classify this the example of

movement of food down the elementary

Canal or say the contraction and

relaxation of blood vessels are

involuntary the involuntary muscles

control their movements they do not show

any striations or bands when stained and

because of that they are also called

unstriated muscles very obvious and very

simple names now we cannot stop their

movements even if we want to do so the

iris of the eye and the broni in the

lungs all have unstriated muscles looks

like scientists loved giving them

different names based on how they look

look smooth and spindle like with a

single nucleus they are also called

smooth muscles and the last type the

movement which keeps you alive the

cardiac muscle and I'm sure you have

already guessed where it's found yes in

the heart the muscles of the heart show

a nice rhythmic moment of contraction

and relaxation throughout our life and

how do they look they're cylindrical

branched and they have a single nucleus

they look a lot like stried muscles just

they have these little intercalated

discs that is going to transfer

electrical impulses through the heart

causing these contractions to happen so

if I were to put these three types side

by side what do I see voluntary muscles

also called skeletal muscles long

cylindrical unbranched and multi

nucleate and then I have involuntary

muscles of two types one smooth muscles

that are long with pointed ends spindle

shaped and they have a single nucleus

and cardiac muscles that are branched

cylindrical and again with a single

nucleus now here's a little pop quiz

question for you which is the strongest

muscle in the body I don't think you

would have guess this it's the tongue

yes the tongue while you may actually

not be able to bench press too much with

your tongue it is in fact the strongest

muscle in your body in proportion to its

size if you think about it every time

you eat swallow talk you use your tongue

right ensuring that it gets quite a big

workout throughout day okay connective

tissue and as the name suggests it has

something to do with connections and is

a part of all connecting substances of

our body like bones blood and fat and

what exactly makes blood red the fluid

part of Blood The Matrix is actually

colorless and it's called plasma plasma

contains proteins salts and hormones so

in this plasma you have some red blood

cells what we call rbc's white blood

cells wbcs and plets floating around and

it's the rbcs as you guessed which give

the blood the distinctive red color and

again it's a substance called hemoglobin

inside the RBC which cause it to be red

so what is the most important function

of blood

Transportation yes but transportation of

what oxygen oxygen that drives every

single cell in your body the hemoglobin

in your RBC carries oxygen and supplies

it to every cell in your body and you

know what your brain uses 20% of that

oxygen which enters your bloodstream the

brain only makes up 2% of our body mass

yet consumes more oxygen than any other

organ in the body making it extremely

susceptible to damage related to oxygen

deprivation so breathe deep to keep your

brain happy and swimming in oxygenated

cells now the heart the muscle man of

the circulatory system let's take our

memory back to cardiac muscle pumps the

blood all through the body blood just

cannot flow because of gravitation you

know in fact the human heart you know

creates that much pressure enough

pressure to squirt blood an astounding

30 ft uh there used to be a medieval

misbelief that aristocratic blood was

blue it's of a Spanish origin sangri aul

which means of blue blood and was used

to refer to someone of very high rank

and birth and let's keep the suspense

going I'm going to let you find out why

why is it that Royal families are said

to have or said to have believed to have

blue blood our blood is red for sure

because of the iron content in the

hemoglobin that I spoke about just now

there are some blue blooded creatures

spiders and crabs May for good make for

good examples they have something

similar to blood it's called hemolymph

and there is a copper based pigment in

that which makes it blue what about

white blood cells typically used in

defense to protect our body against

foreign invaders no they're not going to

dish out a sword and armor from your

body and get you War Ready I am talking

about Invaders at a microscopic level

viruses parasites the ones that aren't

really supposed to be in our body but

are there we need to get rid of them

real fast and the wbcs actually help you

do that now platelets are found only in

mammals and they help in the clotting of

blood so three major blood types rbcs

wbcs platelets all swimming around

happily in in the plasma the next type

of connective tissue that you should

know about is the bone the framework

that supports the body and forms the

most valuable archaeological finds due

to which we're able to find out so many

evolutionary relationships and answer

some critical questions like where we

exactly came from one interesting fact

about bones is that you are born with

more bones than when you die yes really

babies are born with 300 bones but by

the time you reach adulthood the number

is reduced to 206 that's because some

bones fuse together as you get

older and your feet account for one

quarter of all your body's bones you may

not really give your feet much thought

but they are home to more bones than any

other part of your body so how many

exactly of the 200 or so bones in the

body of the 206 bones in the body the

feet contain a whooping

52 now Bones come in a very hard Matrix

made up of calcium and phosphorus you

must have seen all these calcium

supplements right that is for

strengthening your

bones now two bones can be connected to

each other by another type of connective

tissue called the ligament when you run

and twist your ankle a minor injury that

could happen to you is a ligament tear a

major injury would be a fracture now

that's where there's a crack in your

bone and if you ever had it you know it

it's very very painful the ligament is

very elastic with very little Matrix and

then you have tendons which connect

muscles to bones they are filled with

fibers and not that elastic okay so to

summarize ligament is bone to bone and

tendon is muscle to Bone so ligaments

and tendons two important type of

connections cartilage is found in your

nose and your ears try twisting them a

bit and you can see that this is

actually possible however you cannot

bend the bones in your arms or legs both

are types of connective tissue but see

how different they are and how does it

look it has some widely spaced cells and

a solid Matrix embedded with proteins

and sugars now let's talk about some of

the softer connective tissues the tissue

that connects the skin and the muscle

all around the blood vessels and in the

bone marrow the bone marrow fills up the

hollow part of the bone it's a little

bit aier if I'm allowed to use that word

compared to Bone and tendon and this

ligament is called AOL tissue this

tissue is like a medical emergency kit

as well and helps in the repair of

damaged tissues another soft tissue that

you would read about or learn about is

the fat tissue or the adipose tissue

that does all the cushioning and in some

cases the extra cushioning of our body

and where is the is found this is easy

between the skin and the internal organs

the cells of this tissue are filled with

fat globules and this also will serve as

an insulator so you have blood cells

bone ligament tendons arol tissue

adipose tissue all unique all special

all important and all different types of

connective tissue and we made our

journey to the last tissue the nervous

tissue

it comes together to form nervous system

of the body whose main components are

the big boss the brain and the spinal

cord so what exactly does the nervous

system do it takes all important

decisions for you about what the body

should do how it should look like and so

on and so on and since this is such an

important system you would have guessed

that the cells in the system would be

super special too and you are right the

nervous tissues comprised of very very

special cells called neurons and Gile

cells now the work of the nervous system

is to one send stimuli like touch smell

taste sight and hearing and two send

impulses across the body through

electrical signals now neurons look like

typical cells with a cell body and a

nucleus now this is an important diagram

from an exam point of view and will make

it very easy if you ask me for an

analogy as you can see it looks

something like a tree with branches the

trunk and The Roots the branches are the

dendrites the trunk is the axon and the

routs are called the axon terminals you

heard that word before right what

exactly happens in a train or a bus

terminal trains or buses come in and go

out similarly at the axon terminals

important information through electrical

impulses transferred from one neuron to

the other they actually high jump across

from one neuron to the other through the

small space called the synapse but gal

cells they aren't as famous as neurons

right in fact all the attention is

stolen by the nerve cells no one even

talks about Gia that is plural for gal

cells but the fact is that there are 10

to 50 times more gal cells in our body

than nerve cells but neurons cannot even

function properly without the gal cells

they are the personal secretaries of the

neuron and do a lot of chores for the

neurons they hang around in bunches all

around the nerve cells in Greek actually

Gia means glue the glue of the nervous

system although only this is partially

accurate they do go surround the neurons

and support them but along with that

they Supply nutrients and oxygen to the

neurons they insulate one neuron from

the other and they also destroy

pathogens and help in protecting these

neurons many nerve fibers bundle up

together with the connective tissue and

make up a nerve the nerve impulses

generated allow us to actually move our

muscles so this nice

neat interplay of nervous and muscular

tissue is fundamental to movement you

can clearly see how different tissues

come together in such perfect

coordination to give you the gift of

life