Download BB Lab 10

Lab 10
Cerebellum
3
1
2
4
5
9
6
10
7
8
13
14
15
16
12
19
20
21
17 18
11
Deep cerebellar nuclei
Fastigial
nucleus
3
Interposed
nuclei
4
Dentate5 nucleus
1
Cerebellar cortex
Cerebellar white mater
2
Molecular
layer
1
2Purkinge cell layer
Granule
layer
3
4
Subcortical white matter
Are the parallel fibers of the granular
cut longitudinally or tansversely?
Transversely
Cerebellum, cell stain
1Molecular
(layer)
layer
Purkinje
cell
2 (cell)
Granule
layer
3 (layer)
Is this section cut longitudinally or tansversely?
Transversely
Cerebellar Cortex, golgi stain
Inferior
Cerebellar
peduncle
Inferior Olivary
4
(nuclei)
Nuclei
1
mid medulla
2
(nuclei)
Vestibular Nuc.
Olivocerebellar fibers
(dark striations)
3 (fibers)
5
Inferior
Cerebellar
peduncle
ROSTRAL MEDULLA
6
(nucleus)
Vestibular
Nuclei
7
(nuclei)
reticular motor nuclei
in reticular formation
corticobulbar &
2 (fibers)fibers
corticospinal
corticopontine
1 (fibers)
fibers
corticopontine
3 fibers
(fibers)
4red
(nucleus)
nucleus
cerebellothalamic
5 (fibers)
fibers
corticobulbar &
7 (fibers) fibers
corticospinal
corticopontine
8 fibers
(fibers)
corticopontine
6 fibers
(fibers)
red
9 nucleus
(nucleus)
Midbrain/Thalamus Transition
Pontocerebellar fibers
1
(fibers)
(dark,
horizontal)
corticobulbar &
3 (fibers)
corticospinal fibers
Pontine nuclei
4
(pale in brain
(nuclei)
slice)
middle
5
cerebellar
peduncle
superior cerebellar peduncle
2 from the cerebellum)
(outflow
Pons
Superior cerebellar peduncle
1
(outflow from the cerebellum)
Superior cerebellar
2
peduncle (outflow
from cerebellum)
Midbrain
Superior cerebellar
1 peduncles
Lateral lemniscus
Decussation of superior
2 peduncles
cerebellar
Midbrain
Posterior limb,
1 capsule
Internal
Posterior limb,
3
Internal capsule
VL
nuc.
VL
crus cerebri with
2 (fibers)
corticopontine fibers
crus cerebri with
4 (fibers)
corticopontine
fibers
Thalamus
1
What kind of weighted MRI is this?
T1
1
What does it mean when “the tonsils herniate?”
What kind of weighted MRI is this?
The tonsils are the most caudal cerebellar tissues and they can bulge, or herniate
T2
into the foramen magnum. The meduallry
distortion occurring with tonsillar
herniation threatens respiratory drive and other essential life functions
1
(nucleus)
What kind of weighted MRI is this?
T1
1
(nucleus)
What are the inputs & outputs of this nucleus?
What kind
of weighted
MRI is fibers
this? from the red nucleus,
Inputs to the inferior olivary
nucleus:
rubroolivary
spinal afferents and reticuloolivary fibers
T2 from the reticular formation. Outputs
from the inferior olivary nuclei: olivocerebellar fibers to the contralateral
cerebellum terminating as climbing fibers.
Middle
Cerebellar
Peduncle
1
What kind of weighted MRI is this?
T1
Middle
Cerebellar
Peduncle
1
What is the source of info being sent through the middle cerebellar peduncle?
What kind of weighted MRI is this?
Pontine nuclei receive input from the cortex via corticopontine fibers.
T2
Pontocerebellar fibers enter the contralateral
cerebellum via the middle cerebellar
peduncle.
1
What is the main source of info being transmitted to the
midbrain from the cerebellum? Where does it terminate?
of weighted MRIfibers
is this?travel in the superior
Cerebellorubral fibers What
and kind
cerebellothalamic
cerebellar peduncle and influence UMN T1
systems. Cerebellorubral fibers terminate
in the contralateral red nucleus. Cerebellothalamic fibers terminate in the
contralateral thalamus.
1
What is a functional task shared by the fastigial nucleus & the vermal cortex?
What
kind of weighted MRI
is this?
The fastigial nucleus links
vestibulocerebellar
cortex
and portions of the vermal
cortex with vestibular and reticular nuclei
T2of the brainstem. They share the task of
influencing axial musculature.
Olivocerebellar fibers –
cerebrocerebellum receives
fibers from contralalteal ION
Vestibular
Nuclei
Inf
Cerebellar
peduncle
Inf
Olivary
Nucleus
What is the ~location of the:
Vestibular Nuclei?
Inferior Cerebellar Peduncle?
Inferior Olivary Nucleus?
Olivocerebellar Fibers?
Midrostral Medulla Level
Olivocerebellar fibers
Vestibular
Nuclei
Inf
Cerebellar
peduncle
Inf
Olivary
Nucleus
What is the ~location of the:
Vestibular Nuclei?
Inferior Cerebellar Peduncle?
Inferior Olivary Nucleus?
Olivocerebellar Fibers?
Rostral Medulla Level
Corticopontine fibers
Corticobulbar fibers
What is the ~location of the:
Corticospinal Fibers?
Corticobulbar Fibers?
Corticopontine Fibers?
Rostral Midbrain Level
Middle
Cerebellar
Peduncle
Pontine Nuclei
Pontocerebellar
fibers
What is the ~location of the:
Middle Cerebellar Peduncle?
Pontine Nuclei?
Pontocerebellar Fibers?
Rostral Pons Level
Sup.
Cerebellar
peduncle
What is the ~location of the Superior Cerebellar Peduncle?
Rostral Pons Level
Sup.
Cerebellar
peduncle
What is the ~location of the Superior Cerebellar Peduncle?
Rostral Pons Level
Sup. Cerebellar
peduncle
decussation
What is the ~location of the Superior
Cerebellar Peduncle Decussation?
Pons/Midbrain Junction
Sup. Cerebellar
peduncle
decussation
What is the ~location of the Superior
Cerebellar Peduncle Decussation?
Caudal Midbrain Level
Cerebellothalamic
fibers
Red
Nucleus
Red
Nucleus
What is the ~location of the:
Red Nucleus?
Cerebellothalamic fibers?
Rostral Midbrain Level
thalamus
What is the ~location of the thalamus?