Blood Flow Through the Heart [Made Easy] - Cardiac Circulation Animation

Summary

This Easy Med video simplifies the complex blood flow through the heart, using a 12-step process divided into the right and left sides. It starts with deoxygenated blood entering the right atrium via the superior and inferior vena cava, then moves through the tricuspid valve into the right ventricle, and is pumped to the lungs via the pulmonary valve. Oxygenated blood returns from the lungs through the pulmonary veins to the left atrium, passes through the mitral valve into the left ventricle, and is finally ejected into the aorta for systemic circulation. The video employs diagrams and a 2x2 table to clarify these steps, making it easier to understand and remember the heart's function.

Takeaways

• 📚 The video is part of the Easy Med channel, which simplifies medical and science topics.
• 🔗 The channel provides free notes and an Easy Med blog that correlate with the videos, found on easymedlearning.com.
• 🧠 The video's focus is on the blood flow through the heart, aiming to help viewers label a detailed diagram by the end.
• 💡 The video uses simple tricks and a step-by-step approach to explain the blood flow, making it easier to remember.
• 🟦 The right side of the heart handles deoxygenated blood, which is pumped to the lungs for oxygenation.
• 🟥 The left side of the heart receives oxygenated blood from the lungs and pumps it to the rest of the body.
• 🔄 The blood flow through the heart is divided into 12 steps, with six steps on each side, following a similar pattern.
• 🩸 The right atrium receives deoxygenated blood from the superior and inferior vena cava, then pumps it to the right ventricle.
• 🫀 The left atrium collects oxygenated blood from the pulmonary veins, then sends it to the left ventricle.
• 🔁 The video emphasizes the importance of understanding the valves (tricuspid, pulmonary, mitral, aortic) in the blood flow process.
• 📈 The video concludes with a realistic animation of blood flow, reinforcing the learned concepts.

Q & A

What is the primary purpose of the Easy Med channel?

The primary purpose of the Easy Med channel is to make medical and science topics easy to understand by providing educational videos, notes, and a blog that correlate with the video content.

How can viewers access additional materials related to the videos?

Viewers can access additional materials such as notes and an easy med blog by visiting the Easy Med website, easymedlearning.com, which is linked in the video description.

What is the focus of the video script provided?

The focus of the video script is to explain the blood flow through the heart, using simple tricks and a step-by-step approach to help viewers understand and label a diagram of the heart's blood flow.

How is the heart divided for the purpose of understanding blood flow?

The heart is divided into two sides for understanding blood flow: the right side, shown in blue, and the left side, shown in red. Each side has six main steps or structures through which blood flows.

What are the two main blood vessels that bring deoxygenated blood to the right side of the heart?

The two main blood vessels that bring deoxygenated blood to the right side of the heart are the superior vena cava and the inferior vena cava.

What is the role of the tricuspid valve in the blood flow through the heart?

The tricuspid valve allows blood to flow from the right atrium to the right ventricle, preventing backflow during the process.

What is the function of the main pulmonary artery in the context of blood flow?

The main pulmonary artery carries deoxygenated blood from the right side of the heart to the lungs to become oxygenated.

How does the left side of the heart contribute to the overall blood flow?

The left side of the heart pumps oxygenated blood it receives from the lungs to the rest of the body through the pulmonary veins, left atrium, left ventricle, and aorta.

What is the significance of the mitral and aortic valves in the blood flow through the heart?

The mitral valve allows blood to flow from the left atrium to the left ventricle, while the aortic valve allows blood to flow from the left ventricle into the aorta, ensuring unidirectional flow.

What is the main goal of the right side of the heart in terms of blood flow?

The main goal of the right side of the heart is to pump deoxygenated blood it receives from the rest of the body to the lungs to become oxygenated.

What is the main goal of the left side of the heart in terms of blood flow?

The main goal of the left side of the heart is to pump oxygenated blood it receives from the lungs to the rest of the body.

Outlines

00:00

🩺 Introduction to Blood Flow Through the Heart

This paragraph introduces the topic of the video, which is the blood flow through the heart. It emphasizes the educational resources available on the Easy Med channel, such as video notes and an accompanying blog on the website easymedlearning.com. The video promises to teach viewers how to label a diagram of the heart's blood flow by the end, using simple tricks for memorization. The host also references a previous video that covered the anatomy of the heart, suggesting that viewers watch it for a comprehensive understanding. The heart is divided into two sides for easier understanding: the right side, shown in blue, and the left side, shown in red, each with six main steps or structures involved in blood flow.

05:00

🔍 Detailed Explanation of Blood Flow in the Heart

This paragraph delves into the specifics of blood flow through the heart, starting with the right side. It describes the role of the superior and inferior vena cava in carrying deoxygenated blood to the right atrium. The blood then moves through the tricuspid valve into the right ventricle and is pumped into the pulmonary artery through the pulmonary valve during systole. The function of the right side of the heart is to send deoxygenated blood to the lungs for oxygenation. The paragraph then transitions to the left side of the heart, explaining how oxygenated blood from the lungs enters through the pulmonary veins into the left atrium, moves through the mitral valve into the left ventricle, and is then pumped into the aorta through the aortic valve during systole. The left side's function is to distribute oxygenated blood to the rest of the body. The paragraph concludes with a recap using a 2x2 table from a previous video to visualize the blood flow and a transition to a more realistic anatomical image for further explanation.

Keywords

💡Blood flow

Blood flow refers to the circulation of blood through the heart and blood vessels. In the video, understanding blood flow is central to grasping the heart's function. The script describes the step-by-step journey of blood through the heart's chambers and valves, highlighting the process for both oxygenated and deoxygenated blood.

💡Heart

The heart is a muscular organ that pumps blood throughout the body via the circulatory system. The video script uses the heart as the primary focus, explaining the blood flow through its various chambers and the role of different valves in ensuring one-way flow, which is crucial for maintaining circulation.

💡Right side of the heart

The right side of the heart, as mentioned in the script, is responsible for receiving deoxygenated blood from the body and pumping it to the lungs for oxygenation. The script outlines the specific steps and structures involved, such as the right atrium and ventricle, and the tricuspid and pulmonary valves.

💡Left side of the heart

The left side of the heart receives oxygenated blood from the lungs and pumps it to the rest of the body. The video script emphasizes the parallel process on the left side, involving the left atrium and ventricle, and the mitral and aortic valves, which are essential for efficient blood circulation.

💡Superior vena cava

The superior vena cava is a large vein that carries deoxygenated blood from the upper body to the right atrium of the heart. In the context of the video, it is the first step in the blood flow through the right side of the heart, illustrating the initial entry point of blood returning from the body.

💡Inferior vena cava

The inferior vena cava is another large vein that carries deoxygenated blood from the lower body to the right atrium. The script uses this term to explain the dual entry points of deoxygenated blood into the heart, complementing the superior vena cava.

💡Pulmonary veins

Pulmonary veins transport oxygenated blood from the lungs to the left atrium of the heart. The video script highlights the role of pulmonary veins as the return pathway for oxygen-rich blood, which is then distributed to the body by the left side of the heart.

💡Valves

Valves in the heart, such as the tricuspid, mitral, pulmonary, and aortic valves, ensure that blood flows in one direction through the heart. The script explains how these valves open and close at specific times during the cardiac cycle to facilitate the correct flow of blood.

💡Cardiac cycle

The cardiac cycle refers to the series of events that occur in the heart as it contracts and relaxes. The video script mentions diastole and systole, which are the relaxation and contraction phases of the heart, respectively. Understanding the cardiac cycle is key to comprehending how blood moves through the heart.

💡Diastole

Diastole is the phase of the cardiac cycle when the heart is at rest and filling with blood. The script uses diastole to explain the period during which blood flows from the atria to the ventricles, preparing the heart for the next contraction.

💡Systole

Systole is the phase of the cardiac cycle when the heart contracts and pumps blood. The video script describes systole as the time when the ventricles squeeze to push blood into the pulmonary artery and aorta, distributing it to the lungs and the rest of the body.

Highlights

Introduction to the Easy Med channel and its resources for learning medical and science topics.

The video's focus on explaining blood flow through the heart with simple tricks for memorization.

The use of a diagram to label and understand the entire cardiovascular system by the end of the video.

Division of the heart into two sides, right and left, each with six main steps or structures for blood flow.

The similarity in pattern between the right and left sides of the heart in terms of blood flow.

Detailed explanation of the first step involving the superior and inferior vena cava.

Description of the right atrium as the entry point for deoxygenated blood from the body.

Explanation of the tricuspid valve's role in blood flow from the right atrium to the right ventricle.

The function of the pulmonary valve and main pulmonary artery in sending deoxygenated blood to the lungs.

The role of the left side of the heart in pumping oxygenated blood to the rest of the body.

Introduction of the pulmonary veins as carriers of oxygenated blood from the lungs to the left atrium.

The mitral valve's function in allowing blood to flow from the left atrium to the left ventricle.

Description of the aortic valve and aorta's role in distributing oxygenated blood to the body.

The use of a 2x2 table to visualize blood flow through the heart's main structures.

Application of learned concepts to a realistic heart diagram for better understanding.

Animation summarizing the blood flow through the heart, highlighting deoxygenated and oxygenated blood paths.

Encouragement for viewers to engage with the video by liking, commenting, and subscribing for more educational content.

Transcripts

[Music]

welcome back to the easy med channel

where medical and science topics are

made easy

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and an easy med blog that correlates

with the video

all found on the easymed website

easymedlearning.com linked down below in

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in this video today we're going to be

talking about the blood flow through the

heart

we've got some simple tricks that will

help you remember the material

by the end of this video you'll be able

to label this entire diagram

we're also going to be using this

diagram today to walk through the blood

flow of the heart step by step

you might remember in the last easy med

video we used the same diagram to learn

the anatomy of the heart

by the end of that video we were able to

label all the main cardiac structures

shown here

we simplified the anatomy of the heart

using this cartoon image and 2x2 table

that video is full of tricks and ways to

remember the names and anatomical

features of the main cardiac structures

so i highly encourage you check out the

video it'll be linked down below in the

description

that will teach you the anatomy of the

heart and now we're going to walk

through the blood flow through those

structures

the easiest way to go about this is to

divide the heart into two sides

first we have the right side shown in

blue there are six main steps or six

main structures

in which blood flows through the right

side of the heart then we have the left

side shown in red

same thing here there are six main steps

or six main structures

in which blood flows through the left

side of the heart we're going to walk

through these 12 steps one by one

and just like we did in the last video

about the anatomy of the heart we're

going to first start off with this

cartoon image

and then we'll go back to the original

diagrams to bring it all together

one of the first things you'll notice if

you take a look at the 12 steps as a

whole

is that the pattern between the right

and left side of the heart is similar

steps one and six involve a blood vessel

and this makes sense because that's how

blood enters and exits that side of the

heart

steps two through five go chamber valve

chamber valve

so if you remember this general pattern

this will help you remember the order in

which blood

flows through each side of the heart

let's now walk through these 12 steps

starting with the right side of the

heart

the first step is the superior vena cava

and inferior vena cava

these are the main blood vessels that

carry the deoxygenated venous blood from

the rest of the body

to the right side of the heart

specifically the right atrium

the superior vena cava is located

superiorly and it carries the

deoxygenated venous blood from the upper

body to the right atrium

the inferior vena cava is located

inferiorly and it carries the

deoxygenated venous blood from the lower

body to the right atrium

and this brings us to step two which is

the right atrium

the right atrium is the first chamber of

the heart in which the deoxygenated

blood from the rest of the body

enters blood will then flow from the

right atrium to

another chamber known as the right

ventricle this occurs during diastole

when the heart is at rest and filling

with blood

there's a previous easy med video where

we talk about the cardiac cycle along

with diastole and systole

and how the pressures in the heart

change that video will be linked down

below in the description so feel free to

go check it out

now going back to those steps you may

have noticed that we skipped the third

one

as blood flows from the right atrium to

the right ventricle it travels through a

valve known as the tricuspid valve

so let's recap this so far step one was

the superior vena cava and inferior vena

cava

they were the blood vessels that carried

the deoxygenated blood from the rest of

the body to the right atrium which is

step number two

blood then flows from the right atrium

through the tricuspid

valve which is step number three and

enters another chamber of the heart

known as the right ventricle

which is step four during systole when

the heart is squeezing and contracting

it pumps blood forward from the right

ventricle to the main pulmonary artery

or pulmonary trunk

as blood flows from the right ventricle

to the main pulmonary artery it travels

through another valve known as the

pulmonary valve

so the pulmonary valve is step number

five and the main pulmonary artery is

step number six

the function of the main pulmonary

artery is to then carry the deoxygenated

blood from the right side of the heart

to the lungs to become oxygenated it

does so using the right and left

pulmonary arteries

which we'll see some better pictures of

coming up so the main goal of the right

side of the heart

is to pump the deoxygenated blood it

receives from the rest of the body

to the lungs to become oxygenated an

easy way you can remember the function

of the right side of the heart is that

it pumps blood right to the lungs

so now that the deoxygenated blood has

become oxygenated we need to pump this

blood to the rest of the body and that's

where the left side of the heart comes

into play

starting with the first step we again

have blood vessels involved they're the

pulmonary veins and their function is to

carry oxygenated blood from the lungs to

the left side of the heart

specifically the left atrium we'll see

some better pictures of the pulmonary

veins coming up

the second step is the left atrium the

left atrium is the chamber of the heart

that receives oxygenated blood from the

lungs

blood will then flow from the left

atrium to the left ventricle during

diastole

as blood flows from the left atrium to

the left ventricle it travels through

another valve known as the mitral valve

so you should be noticing a similar

pattern on the left side as you did on

the right side

first we have blood vessels that allow

the blood to enter that side of the

heart

then we entered an atrium then we

traveled through a valve

and now we've entered another ventricle

during systole when that heart is

squeezing and contracting

it's going to pump blood forward from

the left ventricle into the aorta

as blood flows from the left ventricle

into the aorta it passes through another

valve known as the aortic valve

so you should be seeing a similar

pattern here again between that left and

right side

we've got the aortic valve which is step

number five we have the aorta which is

step number six

the function of the aorta is to carry

oxygenated blood from the left side of

the heart to the rest of the body

so the main goal of the left side of the

heart is to pump oxygenated blood it

receives from the lungs to the rest of

the body

an easy way to think about the function

of the left side of the heart is that it

pumps blood that has left the lungs

let's now use the two by two table we

made in the last video about the anatomy

of the heart

and this will give us another way to

visualize the blood flow through the

heart

so first we have the superior vena cava

inferior vena cava that carry

deoxygenated blood from the body to the

right atrium

blood will then flow from the right

atrium through the tricuspid valve

and enter the right ventricle blood will

then exit the right ventricle

travel through the pulmonary valve and

enter the main pulmonary artery

to be delivered to the lungs to become

oxygenated the oxygenated blood will

then travel from the lungs

through the pulmonary veins and enter

the left atrium

blood will then flow from the left

atrium through the mitral valve and

enter the left ventricle

blood exits the left ventricle travels

through the aortic valve

and enters the aorta to be delivered to

the rest of the body

now that we have a good understanding of

the blood flow through the heart using

cartoon diagrams

let's apply this to a more realistic

image you can see the blue arrows

represent the flow of deoxygenated blood

through the right side of the heart

and the red arrows represent the flow of

oxygenated blood through the left side

of the heart

we're now going to remove the arrows and

labels so if you need more time to look

at this diagram hit pause in the video

and we're going to bring all this

together with a quick animation

first we have all the deoxygenated

venous blood from the rest of the body

that needs to go to the right side of

the heart to be pumped to the lungs

so the superior vena cava will carry the

deoxygenated blood from the upper body

and the inferior vena cava will carry

the deoxygenated blood from the lower

body

the deoxygenated blood will first enter

the right atrium

during diastole when the heart is

relaxed the blood will flow from the

right atrium through the tricuspid valve

and enter the right ventricle then

during systole when that ventricle is

squeezing and contracting

it will pump the deoxygenated blood from

the right ventricle through the

pulmonary valve and enter the main

pulmonary artery

from there the deoxygenated blood will

travel through the right and left

pulmonary arteries and enter the lungs

to become

oxygenated oxygenated blood will then

travel from the lungs through the

pulmonary veins and enter the left

atrium

during diastole when that heart is

relaxed oxygenated blood will travel

from the left atrium through the mitral

valve and enter the left ventricle

then during systole when the ventricle

is contracting and squeezing

oxygenated blood will be pumped forward

through the aortic valve and into the

aorta to be delivered to the rest of the

body

so now if we go back to the original

diagram we started the video with you

should be able to label and understand

the entire image

and hopefully this video made it easier

for you if you found the content useful

please give the video a quick like or

drop a comment down below before you go

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hit that subscribe button so you don't

miss out on future videos that make

medical and science topics easy

as well as all the free notes and blogs

that correlate with the videos

all of this will help save you time and

studying and help you throughout your

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you can find the easymed blog and notes

for this video linked down below in the

description

or you can go to easymedlearning.com

thanks for watching and i hope you check

out future videos