Ascending Tracts | Spinocerebellar Tract
Summary
TLDRThis educational video script delves into the intricacies of the spinocerebellar tracts, crucial pathways linking the spinal cord to the cerebellum for proprioception, touch, and pressure sensations. It details the dorsal spinocerebellar tract (DST), ventral spinocerebellar tract (VST), cuneocerebellar tract, and the spinal oliveri tract, highlighting their unique pathways, receptors, and functions in maintaining posture, balance, and muscle coordination. The script also explains the distinction between climbing and mossy fibers, essential for understanding cerebellar inputs.
Takeaways
- 📚 The video discusses the spinocerebellar tracts, which are pathways in the nervous system that carry sensory information from the spinal cord to the cerebellum.
- 🔍 It's recommended to watch videos on the dorsal column medial meniscal pathway, the spinothalamic pathway, and pain modulation before this one for a comprehensive understanding.
- 🌟 The script introduces three main spinocerebellar tracts: the dorsal spinocerebellar tract (DST), the ventral spinocerebellar tract (VST), and the cuneocerebellar tract.
- 🦵 The primary stimulus for these tracts is proprioception, which is the sense of body position and movement, crucial for the cerebellum's role in posture, balance, muscle tone, and coordination.
- 💡 Proprioceptive information comes from specialized receptors like muscle spindles, Golgi tendon organs, and also includes sensations from touch and pressure receptors.
- 🏋️♂️ The dorsal spinocerebellar tract (DST) originates from the dorsal root ganglion and ascends through the spinal cord to the cerebellum, with a key nucleus being Clark's column.
- 🔄 The ventral spinocerebellar tract (VST) carries information from below L3 and crosses over to the contralateral side, ascending through the spinal cord and using the superior cerebellar peduncles to reach the cerebellum.
- 🧠 The cuneocerebellar tract is responsible for sensations from the upper limbs, head, and neck, and it synapses in the accessory cuneate nucleus before reaching the cerebellum.
- 🌱 The spino-olivary tract is unique as it synapses first in the inferior olivary nucleus before crossing to the cerebellum, with fibers known as climbing fibers.
- 🌿 Other fibers entering the cerebellum from the spinocerebellar tracts, except those from the spino-olivary tract, are called mossy fibers.
- 👍 The video encourages viewers to like, comment, subscribe, and support the channel through social media and Patreon to help create high-quality educational content.
Q & A
What are spinocerebellar tracts?
-Spinocerebellar tracts are pathways in the central nervous system that transmit proprioceptive information from the spinal cord to the cerebellum. They are essential for the cerebellum to control posture, balance, muscle tone, and coordination of muscle movements.
What are the main types of spinocerebellar tracts discussed in the script?
-The main types of spinocerebellar tracts discussed are the dorsal spinocerebellar tract (DST), the ventral spinocerebellar tract (VST), the cuneocerebellar tract, and the spino-olivary tract.
What is the primary stimulus for spinocerebellar tracts?
-The primary stimulus for spinocerebellar tracts is proprioception, which is the sense of the body's position in space and the awareness of limb and trunk movements.
What is proprioception and why is it important for the cerebellum?
-Proprioception is the unconscious awareness of one's position of their limbs or trunk in space. It is important for the cerebellum because it allows the cerebellum to maintain posture, balance, and coordinate muscle movements accurately.
What is the role of muscle spindles in proprioception?
-Muscle spindles are sensory receptors in muscles that detect changes in muscle length and tension. They play a crucial role in proprioception by sending signals to the central nervous system about the body's position and movement.
How does the dorsal spinocerebellar tract ascend to the cerebellum?
-The dorsal spinocerebellar tract ascends through the lateral white column of the spinal cord, passes through the inferior cerebellar peduncles, and terminates in the cerebellar cortex.
What is unique about the ventral spinocerebellar tract's pathway?
-The ventral spinocerebellar tract is unique because it crosses over to the contralateral side of the spinal cord via the anterior commissure and ascends through the superior cerebellar peduncles before reaching the cerebellum.
What is the function of the accessory cuneate nucleus in the cuneocerebellar tract?
-The accessory cuneate nucleus is a part of the medulla where the cuneocerebellar tract synapses before the fibers ascend to the cerebellum through the inferior cerebellar peduncles.
What are the two types of fibers that enter the cerebellum from the spinocerebellar tracts?
-The two types of fibers that enter the cerebellum are climbing fibers, which come from the inferior olivary nucleus, and mossy fibers, which come from the other spinocerebellar tracts.
Why is it important to understand the different pathways of spinocerebellar tracts?
-Understanding the different pathways of spinocerebellar tracts is important for comprehending the complex neural mechanisms that underlie motor control, coordination, and the body's sense of position and movement.
How does the spino-olivary tract differ from other spinocerebellar tracts?
-The spino-olivary tract differs in that it first synapses in the inferior olivary nucleus before crossing the midline and entering the cerebellum through the inferior cerebellar peduncles, and its fibers are referred to as climbing fibers.
Outlines
📚 Introduction to Spinocerebellar Tracts
The video script introduces the topic of spinocerebellar tracts, which are pathways conveying proprioceptive information from the body to the cerebellum. It suggests watching related videos on the dorsal column medial meniscal pathway and the spinothalamic pathway for a comprehensive understanding. The script mentions several spinocerebellar tracts, including the dorsal spinocerebellar tract (DST), ventral spinocerebellar tract (VST), and cuneocerebellar tract, emphasizing their importance in proprioception and coordination.
🧠 Detailed Exploration of Dorsal Spinocerebellar Tract
This paragraph delves into the dorsal spinocerebellar tract, explaining its role in proprioception and its pathway from the spinal cord through specific nuclei, such as Clarke's column, to the cerebellum. It describes the tract's first- and second-order neurons, their locations, and how the information ascends through the white matter to reach the cerebellar cortex via the inferior cerebellar peduncles.
🔄 Ventral Spinocerebellar Tract's Pathway and Function
The ventral spinocerebellar tract is highlighted in this section, focusing on its unique pathway that carries proprioceptive information from below L3. The tract's first-order neuron is in the dorsal root ganglion, and it crosses to the contralateral side, ascending through the spinal cord and eventually reaching the cerebellum via the superior cerebellar peduncles. The paragraph clarifies the differences between the dorsal and ventral tracts in terms of their pathways and termination sites.
🌐 Cuneocerebellar Tract and Its Sensory Contributions
The cuneocerebellar tract is discussed, emphasizing its role in conveying proprioceptive, touch, and pressure sensations from the upper limbs and head. The tract's pathway is described, from the peripheral process to the central process in the dorsal gray horn, and its ascent to the accessory cuneate nucleus in the medulla. The tract's fibers, known as external arcuate fibers, are highlighted as they pass through the inferior cerebellar peduncles to reach the cerebellar cortex.
🌿 Spino-Olivary Tract and Climbing Fibers
This paragraph introduces the spino-olivary tract, which is unique for its connection to the inferior olivary nuclei in the medulla. The tract carries a variety of sensory inputs and is characterized by its climbing fibers that cross the midline and ascend to the cerebellum via the inferior cerebellar peduncles. The distinction between climbing fibers and mossy fibers, which are associated with other spinocerebellar tracts, is explained.
🎉 Conclusion and Engagement Invitation
The script concludes by summarizing the key points about spinocerebellar tracts and encourages viewers to engage with the content by liking, commenting, and subscribing. It also invites viewers to follow the creator's social media accounts and consider supporting the channel through Patreon to help produce high-quality educational content.
Mindmap
Keywords
💡Spinocerebellar tracts
💡Dorsal spinocerebellar tract (DST)
💡Ventral spinocerebellar tract (VST)
💡Cuneocerebellar tract
💡Spino-olivary tract
💡Proprioception
💡Muscle spindles
💡Nuclear bag and nuclear chain fibers
💡Golgi tendon organ
💡Inferior cerebellar peduncles
💡Climbing fibers and mossy fibers
Highlights
Introduction to spinocerebellar tracts and their function in conveying proprioceptive information to the cerebellum.
The importance of watching related videos on dorsal column medial meniscal pathway and spinothalamic pathway for context.
Explanation of the three main spinocerebellar tracts: dorsal spinocerebellar tract (DST), ventral spinocerebellar tract (VST), and cuneocerebellar tract.
The role of proprioception in providing the cerebellum with information about body position and movement for coordination and balance.
Description of the muscle spindles and their parts, such as nuclear bag and chain fibers, and their response to muscle stretch.
The function of Golgi tendon organs in responding to tendon stretch and their contribution to proprioception.
The pathway of the dorsal spinocerebellar tract from the dorsal root ganglion through Clark's column to the cerebellum.
The unique crossing over of the ventral spinocerebellar tract at the anterior commissure and its ascent to the cerebellum.
The cuneocerebellar tract's focus on sensations from the upper limbs and head, and its synaptic action in the accessory cuneate nucleus.
The concept of climbing fibers and mossy fibers, and their distinct roles in cerebellar function.
The spinal Oliveri tract's peculiar pathway, including its synapse at the inferior olive nucleus and subsequent crossing to the cerebellum.
The significance of the inferior cerebellar peduncles in connecting the medulla to the cerebellum for various tracts.
The role of the cerebellum in processing proprioceptive information for precise muscle movements and posture control.
The anatomical distinction between the dorsal and ventral spinocerebellar tracts in terms of their location and function.
The video's conclusion summarizing the key points about spinocerebellar tracts and their importance in the nervous system.
Encouragement for viewers to engage with the content through likes, comments, and subscriptions, as well as support through Patreon.
Transcripts
I initiatives in this video we're gonna
talk about the spinocerebellar tracks so
again if you guys haven't already please
go watch the dorsal column medial
meniscal pathway first then after that
go watch the spinothalamic pathway after
that watch the pain modulation video now
the last one we're gonna talk about is
the spinocerebellar tract so let's go
ahead and get started on that
so spinocerebellar tracks they are there
as they say they're going from whatever
receptor which we'll talk about into the
spinal cord up to the cerebellum and
most of pretty much all of them are FC
lateral okay so now what are some of
these spino cerebellar tracts
okay so let's talk about these ones so
the first one we're going to talk about
is going to be what's called the dorsal
spine Oh cerebellar tract we're actually
going to kind of write this down you
might see me write it as D s T dorsal
spinocerebellar tract another one is
going to be called the ventral spinal
tract
and again you might see me be a little
lazy bugger and write that as VST and
we'll talk about one more okay which is
really important and this guy is called
the cue neo cerebellar tract okay
just because I'm lazy I'm gonna put C T
alright so these guys are really
important okay and we're gonna talk
about these in pretty good detail and
talk about their stimulus we'll talk
about their receptors we'll talk about
where they're going to in the spinal
cord and where they ascend to where they
terminate so let's go ahead and start
off with the dorsal spinocerebellar
tract first and we'll also just to throw
this one in there at the end we'll do
one last tract and that is actually
gonna be called the spine o Oliveri
tract well throw this one in there at
the end because it's related to the
cerebellum okay goes to the olives first
the inferior olives and then it goes to
the cerebellum so we'll discuss this one
last okay all right so let's go ahead
and get started on the dorsal
spinocerebellar tract so again we know
that these tracks what is a track it's a
bundle of white matter axons basically
that are moving in the central nervous
system and these are ascending tracks
okay so because they're going from the
spinal cord to the cerebellum now what
is the actual stimulus for these tracks
pretty much all of these tracks to make
it easy on yourself pretty much all of
the spinocerebellar tracks respond to
proprioception okay so pretty much all
of these tracks respond to
proprioception so what is this
proprioception proprioception we've
talked about this in the dorsal column
pathway but proprioception is really
important it's basically the since this
sensation the unmanned this case insists
the cerebellum is the unconscious
awareness of one's position of their
limbs are their trunk
in space so in other words how do I
describe that I know where my arm is
right in space I know where my finger is
I know it's touching my nose I know it's
touching my eyes in another way these
proprioceptors not only are they going
up through the dorsal column right that
tract but some of them are actually
terminating in the cerebellum so now
this information is gonna go to the
cerebellum now the cerebellum is
important right because the cerebellum
controls posture it controls balance it
controls muscle tone and coordination of
muscle movements now how does it do that
though how does it maintain our posture
how does it coordinate these muscle
movements help us to have very precise
muscle movements how well the way it
does that it has to be able to get
incoming sensations from our periphery
it also has to consult with our cerebral
cortex and so by doing that it can allow
for it to really calculate an accurate
movement that's why the cerebellum is so
important that it needs to constantly
beginning information from our
proprioceptive that is the primary
important one but it can receive some
other sensations from Xterra receptors
like touch and pressure receptors but I
want you to remember the main stimulus
is proprioception and where is that
proprioception coming from remember we
have those muscle spindles right so we
have those muscle muscle spindles I
remember the muscle spindles the other
two parts you have the nuclear bag
fibers and nuclear chain fibers right
and the nuclear chain fibers were
responding specifically what they were
responding to the beginning of stretched
nuclear bag was responding to the
progression of stretch then we also had
some other structures here which was the
Golgi tendon organ and these responding
to the stretch of the tendons now I did
say that you can also not only respond
to proprioception but also touch and
pressure
okay so this is important it's not as
significant as the proprioception but it
can have some unconscious sensations
that it can pick up like touch and
pressure so it can pick up information
from like your meissner's corpuscles
okay it can pick it up from the pacinian
corpuscles maybe from the Ruffini
corpuscles
all right so different types of
receptors different types of touch and
pressure receptors
now as this information comes together
so we'll have touch and pressure
receptors will have this proprioception
all this information is gonna go into
the spinal cord so it's coming down to
the bottom part of the spinal cord okay
now from here what do you have here you
have the dorsal root ganglion right so
you have the dorsal root ganglion here
this is where the first-order neuron is
so again dorsal root ganglion is where
the first-order in a run of this pathway
it's the dorsal spinocerebellar tract
from here the peripheral process is
picking up the proprioception the touch
and the pressure transmitting it down to
the pseudo unipolar neuron and into the
central process where does it go from
here now there's a specific nucleus that
this is going to stop on I guess very
specific one so this is again we're
talking about the dorsal spinocerebellar
tract so this right here that nucleus is
a very specific nucleus okay and we're
going to talk about that now because we
have to understand this first okay so
let's let's let me explain how this
works this dorsal spinocerebellar tract
because it's important so imagine here I
take a part of the spinal cord here
right and let's say that this is like
the midline region okay and then this is
right side this is left side there's a
set of nuclei located that within the
actual posterior gray horn a certain
length of segments in the spinal cord so
you're gonna find these nuclei okay
they're actually located within the rex
lamina seven if you want to know
and these nuclei extend from c8 all the
way to l2 maybe even l3 so because of
that these nucleus they make a column if
you will all right so what is this
column
they call this Clark's column and it
extends from c8 all the way down to
about l3 and that is that second order
neuron for the dorsal spinocerebellar
tract so that's really important so what
is this nucleus right there that nucleus
is Clark's nucleus it's a part of
Clark's column where does it go from
here okay so now from here from this
Clark's nucleus which is extending from
c8 all the way down to l2 l3 it's going
to come over here into the lateral white
column so over here all this area right
here is lateral white column it's going
to go more than the posterior or dorsal
part of the actual lateral white column
and then guess what it's going to ascend
so now we're gonna have this soccer
moving upwards here so now we should
understand here how this works first
order neuron is within the dorsal root
ganglion second order neuron extends
from c8 to l2 l3 and that is going to be
Clark's nucleus which is actually going
to be here within lamina Rex lamina if
you will Rex lamina seven and then again
from here it's got it's actually gonna
move if see lateral within the posterior
or dorsal part of a lateral white column
and then ascend upwards now from here
where is it gonna go you know there's a
special type of white matter fiber right
here and this is medulla pons midbrain
cerebellum what happens is there's an
actual white matter structure here where
these fibers can actually pass through
and then go and supply thee
cerebral cortex I'm sorry not cerebral
cortex cerebellar cortex this structure
right here that it's actually moving
through is called the inferior
cerebellar peduncles okay
so again what is this tract right here
called this tract is called the dorsal
spine Oh cerebellar tract okay so our
DST we're calling it here all right we
got that sucker down okay now I'm gonna
bring him a little bit more posterior
since we said he was posterior so that's
a little better I like that now
all right cool so we got the dorsal
spine a cerebellar tract which again
that's extending from c3 I'm sorry c8
all the way down to l3 and what type of
sensations is it picking up touch
pressure proprioception sweet deal the
third-order neuron is gonna be the
cerebellar cortex so again you'll have
some nuclei out here that it can
actually go to and again that is going
to be the cerebellar cortex that's its
final termination site okay so we
covered the dorsal spinocerebellar tract
well now we need to do the next one
which is the ventral spinocerebellar
tract this one's kind of a tricky one so
this one's picking up information from
below l3 so any structures that are
coming from below l3 so from l3 l2 l3
all the way down to the coccygeal to the
coccygeal one right all this part down
here is going to be carried by the
ventral spinocerebellar tract so again
from l2 l3 below is gonna be carried by
the ventral spinal
cerebellar tract okay so let's go ahead
and zoom in on that one now so since
this one's a tricky one I want to show
you guys this one it's very interesting
let me actually get this out of the way
here let me put this right here
this is our dorsal spinocerebellar tract
okay this one's very cool I like this
one a lot let's say we come from here
same thing it's also going to be
carrying information of proprioception
it's going to be carrying touch and
pressure but it's going to be carrying
it from information below l2 l3 this guy
again he'll go to what's called the
dorsal root ganglion right in the dorsal
root ganglion you're gonna have this
pseudo unipolar neuron that is going to
be the first order neuron from here he's
gonna come into the actual dorsal gray
horn and sign apps on cell bodies within
the dorsal great horn from here here's
where it gets tricky he crosses over to
the opposite side to the contralateral
side and then ascends upward so what do
we have here for the ventral
spinocerebellar tract so again this one
right here is the ventral
spinocerebellar tract first order neuron
is actually gonna be the doors in the
dorsal root ganglion second order neuron
is gonna be within the posterior or
dorsal gray horn then it crosses to so
it goes across the midline via the
anterior commissure and crosses over to
the contralateral side of the spinal
cord and ascends upward now as it goes
upwards it goes all the way up here so
now there's tract it goes in to where
the midbrain enters and goes through
this white matter structure now what is
this sucker called well what's up this
was the inferior cerebellar peduncles
connecting the medulla to the cerebellum
this is the middle cerebellar peduncles
connecting the pons to the cerebellum so
this one's got to be the superior so
this one right here is called the
superior cerebellar peduncles
okay now from this here's why I told you
it's a tricky tract right look what it
does this guy's really sneaky he moves
behind so you know there's the -
cerebellum right this guy moves from one
side of the cerebellum so let's say that
this in this case this is the left
cerebellum this is the right cerebellum
he moves behind this structure into the
opposite side so look here I'll draw
like kind of like a dashed line here
it's going behind and it's going to the
other cerebellum so across is twice and
then from here it's I naps is on me
third order neurons of the cerebellar
cortex right so that's what's really
important so the ventral spinocerebellar
tract the only difference is from the
dorsal because if they both carry
proprioception touch and some pressure
the only difference is that the dorsal
comes in crosses over if see lateral to
the latter like hollom and ascends
upward all right and then it goes to the
inferior cerebellar peduncles
click with the actual cerebellum the
ventral is actually gonna come in cross
a sin go in and cross again now why did
I say now if you look here let's pretend
for a second I have this guy come right
here so I just want you to understand
why they say that this is dorsal the the
pink pathway here comes in sign APS's
and then look where it goes it goes here
and comes up okay so this is going to be
the posterior part of the lateral white
column this is the anterior part of the
latter white column or and to say it a
different way this is the dorsal part of
the lateral white column this is the
ventral part of the lateral a column so
that's why they call this tract going
upwards the blue tract the ventral
spinocerebellar tract that's why they
call this pink one because it's a more
dorsal to it that's why they call it the
dorsal spinocerebellar tract okay so I
just want to make sure that we're clear
on that okay sweet deal so we've done
the ventral spinocerebellar tract we've
done the dorsal spinocerebellar tract
now it's time to do the kunio cerebellar
tract what's so easy since we set this
establishment down for the dorsal
spinocerebellar that from c8 to l2 l3
is the DS dia the dorsal spine Oh
cerebellar tracked below l2 l3 is the
ventral spinocerebellar tract what you
think is above the cuny a cerebellar
tract so now it's not so hard to
understand that anything above c8 up to
c1 should now be the cue neo cerebellar
tract so this is mainly picking up
proprioception touch and pressure from
the upper limbs and the actual head and
neck structures so that should make
sense so now how does that work okay
let's actually show this guy now let's
do that here we'll come at this level
actually no will come up yeah will come
up at this level so here we're gonna
have this guy coming in here actually
there's more room here let's do it here
so here is going to be this guy right
again this is going to be the peripheral
process it's gonna be picking up touch
pressure proprioception from like the
head the neck the upper limb structures
and then what it's going to send it to
central processing from here when it
goes into the central process it goes
into the post here gray horn right goes
into the post chair gray horn and then
it actually moves upwards apes see
laterally right so it moves upwards and
as it moves upwards it comes to a
special nucleus okay comes to a special
nucleus here that is actually located
within the medulla this nucleus is
really interesting because it's gonna
sound familiar it's gonna sound very
very familiar this nucleus is called the
accessory CUNY eight
nucleus you're probably wait a second
I've heard of that before CUNY nucleus
CUNY ATIS well that was for the dorsal
column medially meniscal pathway here's
the thing with the CUNY Oh cerebellar
track they're not sure yet if it
actually moves up with the fasciculus
CUNY Attis or not but they know that it
actually ascends and moves if see
laterally and picks up sensations from
anything above c8 the head in the neck
and the upper limbs they just know that
it ascends upwards and it synapse is on
this structure here located within the
medulla called the accessory or the
external CUNY eight nucleus then where
does it go remember here just for
simplicity sake here you had the nucleus
CUNY ADIS nucleus gracilis nucleus
gracilis and then nucleus CUNY anus
right they got synapse is from the
dorsal column and then they crossed over
right and when they crossed over we
called that cross the internal arcuate
fibers all right they call that cross at
the internal arcuate fibers well guess
what this accessory CUNY a nucleus gives
off fibers that move through the
inferior cerebellar peduncles they call
these fibers that are coming from the
accessory CUNY a nucleus the external
arcuate fibers so beautiful so this is
called the external arcuate fibers
now from here where will it go it'll go
through the inferior cerebellar
peduncles and it'll go and supply parts
of the cerebellar cortex so again just
remember that does CUNY Oh cerebellar
tract let's actually put this a little
bit more over here they're not sure if
it moves up but they think that it might
move up through the fasciculus CUNY itis
but instead of it actually sign app
saying at the nucleus CUNY Attis it
actually sign apps is at a different
portion here and that is called the
accessory or the external CUNY a nucleus
and then from there fibers will come to
the cerebellum through the inferior
cerebellar peduncles
and these fibers that are going to go
into the inferior cerebellar peduncles
it's called the external arcuate fibers
okay so that covers that guys now last
part I said that we were gonna do a
little tidbit on the spinal Oliveri
tract this one is important too okay
there's special nuclei located within
the medulla and these nuclei here are
called the inferior Oliveri nuclei so
these are called your inferior Oliveri
nuclei okay these guys right here this
system is a little bit odd okay
so another little tricky tract okay how
does this one work okay let's actually
do this one in green once we have this
in green so this tract is a little
interesting so it's going to be picking
up about a bunch of different
proprioception a bunch of different
touch a bunch of different pressure how
does this tract work okay so let's say
here we have this guy coming in again
this is going to be the peripheral
process picking up touch pressure
proprioception and then this is going to
be the central process which is going to
be going into the dorsal root ganglia a
little bit farther here in the dorsal
root ganglia it's going to synapse on a
second order neuron so here's our second
order neuron from here it's going to
cross over it's going to cross over to
the contralateral side through the
answer why
commissure and then move upwards now as
this tract moves upwards it comes in its
sign apses on this nucleus right here
this inferior Oliveri nucleus now from
the inferior Oliveri nucleus something
tricky happens so again what happens
here these fibers are coming in dorsal
root ganglion into the posterior horn
synaptic on the cell bodies they're
crossing to the contralateral side
ascending upwards as the spinal Oliveri
tract as it goes upwards at synapse is
on the inferior Oliveri nucleus from the
inferior Oliveri nucleus these fibers
cross the midline so they cross the
midline and go over to the other side
and then enter into this the actual
cerebellum through what's called the
inferior cerebellar peduncles okay so
the same thing if we were having it come
up here throw on the opposite side what
would it do it would cross over here and
then move into the inferior cerebellar
peduncles and then supply the cerebellar
cortex there's a reason why we should
mention these any fibers that are coming
from the inferior Oliveri nucleus going
into the cerebellum have a specific type
of name these fibers these green fibers
if they're coming from the inferior
Oliveri nucleus they call these climbing
fibers okay they call them climbing
fibers any other fiber any other fiber
which is coming from the ventral
spinocerebellar tract the dorsal
spinocerebellar tract the kunio
cerebellar tract any of that information
that's going into the cerebellum besides
the inferior Oliveri nucleus for example
this pink fiber here this pink fiber was
coming from the dorsal spinocerebellar
tract any fibers other than the climbing
fibers which are coming from the infra
Oliveri nucleus
are referred to as mossy fibers okay
they're called mossy fibers so there's
two different types of fiber fibers
climbing fibers which are coming from
the in fear Oliveri nucleus and mossy
fibers which are coming from anywhere
any other fibers okay
whether it be dorsal spinocerebellar
ventral spinocerebellar or cuneus to
spinocerebellar i'm sorry chunio
cerebellar tract okay and where was the
cue neo cerebellar just so we can have
that here so we can have it all mark
down that was this guy right here so
this guy right here was our cue neo
cerebellar tracked and then the last one
was this green one here and this green
one was the spy no Oliveri tracked all
right knizner so that pretty much covers
everything that you guys would need to
know about the spinocerebellar tracks I
hope it all made sense I really truly do
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