Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
38 Cards in this Set
- Front
- Back
|
what are the lobes of the cerebellum
|
1. anterior
2. posterior 3. flocculonodular |
|
|
what seperates the ant and post lobe
|
primary fissure
|
|
|
what seperates the posterio and flocconodular lober q
|
posterolateral fissure
|
|
|
where is the tegmentum of the brainstem in relation to the 4th ventricle
|
anterior
|
|
|
what are teh 3 zones (regiosn) of the cerebellum
|
1. median: vermis
2. Intermediate: paramedian hemispherel 3. Lateral: hemisphere |
|
|
how can you tell if your looking at the top or bottom of the cerebellum?
|
top: vermis is "clean" not lots of other things around, primary fissure on hemisphere is present
bottom: vermis is "cluttered" tonsils are here, flocculus is visible |
|
|
flocculus
nodulus what is medual |
nodulus id medial,
|
|
|
are the peduncles visible on post or ant
|
post
inferior are the bottom medial part of the middle |
|
|
what hapens to the fibers in the SCP at the inf colliculus
|
the fibers cross
|
|
|
what makes up the ICP, what does each part carry
|
Restiform: sensory from medulla, SC
Juxtamedullary: sensory AND MOTOR to and from vestibular nuclei |
|
|
what does hte juxtamedulary body have
|
afferent/efferent to/from vestibular nucleo
|
|
|
what Nerve Fibers are in the MCP
|
afferent from pontine nuclei
|
|
|
how do afferent NF from pontine nuclei ascend?
|
in MCP
|
|
|
what is in the SCP
|
efferent NF from cerebellar niclei to the VL/VA of thalamus and red nucleus of midbrain
|
|
|
what are the branches of baisler that supply the cerebellum? what branch supplies the cerebellum and is NOT from baisler
|
superior cerebellar
AICA PICA is from vertebral |
|
|
what is more inf, PICA or AICA
|
PICA: from vert
AICA: from baisler **PICA is inf |
|
|
when lookign at the cerebellum anteriorly what is the division of blood supply
|
superiomedial: Superior cerebellar
inferomedial: PICA Inferolateral: AICA |
|
|
what are the two cells in the cerebral cortex, where does synapse occurt
|
1. MossyL synapse at granule, granue synapse of PKJ
2. Climbing: synapse directly on PKJ |
|
|
the two inputs of the cerebellum ultimatly synapse where
|
mossey: granular --> PKJ
climbing --> PKJ |
|
|
what are the 3 layers of cerebellar cortex
|
1. molecular: external
2. PKJ 3. Granular: internal, 4. Subsortical White matter |
|
|
waht is teh external layer of the cerebellar cortex
|
molecular, then PKJ, then grnaular (subcortical white)
|
|
|
PKJ are arranges such that theri densrites are in _____ layer and their axons are in teh __________ layer
|
Dendrites: molecular
Axons: grnaular |
|
|
so in the cerebrum we have gyri, what is the analogous atructure in the cerebellum
|
folium
|
|
|
what layer are climbing and mossy fibers
|
granular (deep)
|
|
|
we know the "inputs" to the cerebellum are mossy and climbing, are these afferent or efferent
|
affernt!
|
|
|
where do climbing fibers originate? how do they enter the cerebellum? where do they synapse?
what is the PKJ climbing ratio |
contralateral inf olivary nucleus
enter via restiform if ICP synapse at cerebelar nuclei and PJK cells **each PKJ receives synaptic from 1 climbing |
|
|
who originates where
climbing mossy |
climbing: contraleteral inf olivary nuclei, thn through restiform
Mossy: Many origins |
|
|
does the synapse of mossy and climbing differ
|
sure does
Mossy: synapse on granular, granular on OKJ (from many places) Climbing: directly on PKJ (from contralateral inf oliv nuclei) |
|
|
where do mossy cells NOT come from
|
NOT inf olivary nuclei, the climbing fibers are from hre
Mossy are from anywhere else |
|
|
how do mossy and climbing enter the cerebellum
|
climbing: restiform of ICP
mossy: ANY of the CP |
|
|
what is teh synapse ratio of mossy and PKJ
|
1 mossy, MANY PJK
|
|
|
what are 2 cool things abotu PKJ
|
1. LOTS of dendrites, and spines to increase SA for synapse
2. Line up like dinosaurs |
|
|
what are 2 cool things abotu PKJ
|
1. LOTS of dendrites, and spines to increase SA for synapse
2. Line up like dinosaurs |
|
|
name the cerebellar nuclei from medial to lateral
|
1. fastigial
2. globose 3. emboliform 4. dentate: squiggly |
|
|
what is a good way to remember the cerebellar nuclei from medial to lateral
|
food good eat dinner
Fastigal globose emboliform dentate |
|
|
where do the cerebellar nuclei get infor form? what do they do with is
|
get info from PKJ and then do MOST of the cerebellar output
|
|
|
what a supplies the fastigal, globose, emboliform, and dentate
|
superior cerebellar
|
|
|
what nucleus receives 2 blood supplies, what are they
|
dentate
Superior cerebellar AND dentate nucleus |
