Unit 2 Post Quiz- Cerebellum

Question 1

Blood supply of the caudal medulla (closed medulla)

Answer 1

Dorsal- post spinal art (PSA)

Middle- Ant spinal art (ANA) and VA (vertebral art)

Ventral - ASA

Question 2

What is the blood supply to the medial meniscus?

Answer 2

ASA

Question 3

Blood supply to the cranial/rostral medulla (open medulla)

Answer 3

Dorsal- Post inf cerebellar art (PICA)

Middle- PICA and VA

Ventral- ASA and VA

Question 4

Blood supply to the caudal pons

Answer 4

Dorsal- Basilar art (BA) , AICA

Ventral- BA

Question 5

Blood supply to the tegmentum of the pons

Answer 5

BA

AICA

Question 6

Blood supply to the basilar pons

Answer 6

BA

Question 7

blood supply to the cranial/rostal pons

Answer 7

Dorsal- Sup cerebellar art (SCA)

Middle- BA, SCA

Ventral- BA (off of pontine branches)

Question 8

Dividing line of the midbrain

Answer 8

colliculi

Question 9

blood supply to caudal midbrain (inf colliculus)

Answer 9

Dorsal- SCA, post cerebral art (PCA)

ventral- BA, SCA

Question 10

blood supply to cranial midbrain (sup colliculus)

Answer 10

dorsal- PCA

ventral- PCA, pCoA (post communicating artery)

Question 11

Where does the cerebellum lie, and what is it covered by?

Answer 11

in the post cranial fossa, covered by tentorum cerebelli (which separates it from the occipital lobe)

Question 12

The cerebellum receives receptors concerned with:

And has outputs from the:

Therefore it is concerned with:

Answer 12

voluntary movements and balancce

deep cerebellar nuclei to the descending motor tracts

muscle coordination

Question 13

Two major indentations to the surface of the cerebellum

Answer 13

primary (anterior) fissure

posteriolateral (uvulonodular, prenodular) fissure

Question 14

location of the primary fissure on the cerebellum

Answer 14

between ant and post lobes

Question 15

location of posteriolateral fissure of the cerebellum

Answer 15

between post and flocconodular lobes

Question 16

of the two fissures of the cerebellum, which has deepest indentation?

Answer 16

primary fissure

Question 17

the posteriolateral fissure of the cerebellum comes from what?

Answer 17

the 4th ventricle

Question 18

3 lobes of the cerebellum

Answer 18

anterior lobe

floccocodular lobe

posterior lobe

Question 19

location of the flocconodular lobe of the cerebellum

Answer 19

ant/sup to the posteriolateral fissure

Question 20

the flocconodular lobe, AKA

Answer 20

archicerebellum (phylogenic, oldest part)

vestibulocerebellum (functional name)

Question 21

function of the flocconodular lobe of the cerebellum

Answer 21

regulates muscle tone associated with balance and eye movement.

allows actions to be nice and smooth

Unconscious control

Question 22

location of the anterior lobe of the cerebellum

Answer 22

Rostral/anterior/superior to primary fissure

Question 23

anterior lobe of the cerebellum, AKA:

Answer 23

Paleocerebellum (phytogenic)

Spinocerebellum (functional)

Question 24

function of anterior lobe of the cerebellum

Answer 24

regulates muscle tone

motor system control of the limbs (innervated by spinal nerves)

unconscious control

Question 25

location of post lobe of the cerebellum

Answer 25

between primary and posteriolateral fissures

Question 26

Posterior lobe of the cerebellum, AKA

Answer 26

neocerebellum (newest) | Cerebrocerebellum

Question 27

function of post lobe of the cerebellum

Answer 27

programmed movements (learned movements associated w/ cerebrum. When 1st learned, they are cerebral movements. Then eventually moves to the cerebellum to be unconscious... Muscle memory, like driving stick)

Question 28

on the longitudinal section, the cerebellum consists of what?

Answer 28

an outer layer of gray matter with an inner core of white matter

Question 29

3 zones of the cerebellum (longitudinal section)

Answer 29

vermis (median) paravermal (paramedian) lateral

Question 30

Medial area of the cerebellum (longitudinal) with fastigial nucleus. What is the purpose?

Answer 30

Vermis increases surface area

Question 31

Medial hemisphere of the longitudinal cerebellum

Answer 31

Paravermal -- just outside the vermis

Question 32

nuclei of the paravermal are made up of:

Answer 32

globose and emboliform nuclei

Question 33

what makes of the hemisphere of the cerebellum

Answer 33

lateral and paravermal areas

Question 34

largest part of the of the cerebellum what nuclei make this up?

Answer 34

lateral zone dentate nucleus

Question 35

deep cerebellar nuclei (intracerebellar nuclei) from lateral to medial:

Answer 35

dentate emboliform globose fastigal

Question 36

what makes of the interposed nuclei of the cerebellum

Answer 36

globose and emboliform | these work together and have the same function

Question 37

largest deep cerebellar nuclei, "U" shaped

Answer 37

dentate

Question 38

smallest deep cerebellar nuclei

Answer 38

emboliform

Question 39

3 histological layers of the cerebellummmmmmmm | from outer most to innermost

Answer 39

molecular purkinje granular

Question 40

what makes up the molecular layer of the cerebellum

Answer 40

stellate and basket cells (inhibitory)

Question 41

what cells make up the purkinje later of the cerebellum

Answer 41

purkinje... duh | inhibitory

Question 42

what cells make up the granular layer of the cerebellum

Answer 42

Granular cells (axons form parallel fibers in molecular layer) (excitatory) and golgi cells (inhibitory)

Question 43

Inhibitory cells of the cerebellum

Answer 43

Basket cells stellate cells purkinje golgi

Question 44

Excitatory cells of the cerebellum

Answer 44

Granular cells Mossy Fiber Climbing fiber

Question 45

what do granular cells excite?

Answer 45

golgi purkinje stellate basket

Question 46

what do stellate cells inhibit

Answer 46

purkinje cells

Question 47

what do basket cells inhibit

Answer 47

purkinje cells

Question 48

what do purkinje cells inhibit

Answer 48

deep cerebellar nuclei OR Vestibular nuclei (in the pons)

Question 49

what do golgi cells inhibit

Answer 49

granular cells

Question 50

Is it possible to inhibit an inhibitor to activate a cell?

Answer 50

yessss

Question 51

Mossy fibers of the cerebellum originate from:

Answer 51

CN VIII Vesticular nuclei (balance) Trigeminal nuclei (proprioception of head) pontine nuclei (current status of environment) Reticular formation (motor system control)

Question 52

what do mossy fibers excite?

Answer 52

deep cerebellar nuclei stellate golgi basket purkinje NOT GRANULAR CELLS!!!!!

Question 53

climbing fibers of the cerebellum come from what?

Answer 53

olivocerebellar tract

Question 54

what do the climbing fibers excite?

Answer 54

deep cerebellar nuclei granular golgi

Question 55

island of gray matter in white matter of the cerebellum

Answer 55

deep cerebellar nuclei

Question 56

all output of the cerebellum goes through whaaat?

Answer 56

deep cerebellar nuclei

Question 57

what inhibits the deep cerebellar nuclei

Answer 57

purkinje cells

Question 58

nuclei of the deep cerebellar nuclei

Answer 58

fastigial nucleus Interposed nuclei Dentate nucleus

Question 59

pathway of fastigial nucleus and function

Answer 59

fastigial n. (motor system control) reticular formation (RF) and vestibular nuclei muscles of erect posture

Question 60

pathway of interposed nuclei

Answer 60

``` red nucleus (MS controller) Rubrospinal tract (MS controller) Spinal cord ``` OR ventral ant, ventral lateral thalamus motor cortex (Origin of voluntary motor activity) Corticospinal tract Spinal cord

Question 61

pathway of the dentate nucleus

Answer 61

VA/VL thalamus Motor cortex corticopinal tract (similar to interposed)

Question 62

Cerebellar peduncles

Answer 62

inferior middle superior

Question 63

peduncle for input of medulla to the cerebellum

Answer 63

inf cerebellar peduncle

Question 64

cerebellar peduncle containing pontocerebellar tract . Function?

Answer 64

Middle cerebellar peduncle | influences of the cerebrum on the cerebellum aka cerebral override of the cerebellum

Question 65

cerebellar peduncle containing output channel for deep cerebellum to midbran

Answer 65

superior cerebellar peduncle