Cerebellum

Question 1

Which view of cerebellum?

Answer 1

Posterior

Question 2

Which view of cerebellum?

Answer 2

Anterior

Question 3

Which view of the cerebellum?

Answer 3

Right (inferior); left (superior)

Question 4

What dural extension separates the cerebellum from the inferior occipital lobe?

Answer 4

Tentorium cerebelli

Question 5

Which ventricle is located between the pons and cerebellum?

Answer 5

4th

Question 6

Where is the flocculus

Answer 6

It “flocks” the peduncles; visible on anterior surface just below the middle CP

Question 7

On which surface is the paravermis visible?

Answer 7

Superior

Question 8

Which lobe of cerebellum is largest?

Answer 8

Posterior

Question 9

Which two regions make up the vestibulocerebellum

Answer 9

Flocculus and nodule

Question 10

Which region represents the cerebrocerebellum?

Answer 10

Most of posterior lobe

Question 11

Which structures make up the spinocerebellum?

Answer 11

1) Vermis 2)Paravermis 3)Anterior lobe

Question 12

What are the two afferents to the SUPERIOR cerebellar peduncle?

Answer 12

1) Anterior spinocerebellar tract; 2) Acoustic and optic information

Question 13

What are the two EFFERENTS of the SUPERIOR cerebellar peduncle?

Answer 13

1) Dentatorubrothalamic tract; Dentatothalamic tract

Question 14

What afferent tract travels via the middle cerebellar peduncle (hint: why is the MCP the biggest peduncle?)

Answer 14

Pontocerebellar tract

Question 15

Middle cerebellar efferents?

Answer 15

None!

Question 16

Inferior cerebellar peduncle afferents

Answer 16

Vestibulocerebellar tract; olivocerebellar tract; posterior spinocerebellar tract

Question 17

ICP efferents

Answer 17

Cerebello-vestibular tract; cerebello-olivary tract

Question 18

Which cerebellar nucleus is involved in the vestibulocerebellar loop?

Answer 18

Fastigial

Question 19

Which cerebellar lobe do projections from the pontine nuclei terminate in?

Answer 19

Posterior lobe (contralateral)

Question 20

Which artery supplies the cerebellar peduncles?

Answer 20

AICA

Question 21

Which artery supplies the flocculonodular lobe?

Answer 21

AICA

Question 22

Which arteries supply the posterior lobe?

Answer 22

PICAs and SCA

Question 23

Which artery supplies the tonsils?

Answer 23

PICAs

Question 24

Which artery supplies the anterior lobe?

Answer 24

SCA

Question 25

Which arteries supply the vermis

Answer 25

PICAs (inferior) and SCA (superior)

Question 26

Which arteries supply the deep cerebellar nuclei

Answer 26

Mostly SCA with help from AICAs

Question 27

Lesions to the cerebellum result in

Answer 27

Truncal instability or IPSILATERAL limb deficits

Question 28

What are the 4 deep nuclei from lateral to medial? (don't eat greasy food)

Answer 28

1) Dentate 2) Emboliform 3)Globose 4)Fastigial

Question 29

Which cerebellar region and nucleus are responsible for truncal movements

Answer 29

Vermis + fastigial nucleus

Question 30

Which region (spinocerebellum) is associated with truncal movements

Answer 30

Anterior lobe; efferents via globose and emboliform nuclie

Question 31

How many time does motor-coordination (limb adjustment) information cross the midline?

Answer 31

Twice; 1 from cerebellum to motor cortex, one at decussation of pyramids

Question 32

Which cerebellar functional system is involved in the learning of new skills?

Answer 32

Neocerebellum/Cerebrocerebellum

Question 33

Which 4 spinal tracts provide information to the cerebellum?

Answer 33

1) Posterior spinocerebellar (lower limb), 2) Cuneocerebellar (upper limb); 3) anterior spinocerebellar (lower limb); 4) rostral spinocerebellar (upperlimb)

Question 34

Which spinocerebellar tract involves Clarke's nucleus?

Answer 34

Posterior

Question 35

What levels of the SC does Clarke's nucleus extend over?

Answer 35

L3 to C8 -- fibres below L3 travel in the **fasciculus gracilis** until they reach L3 and synapse in Clarke's nucleus

Question 36

Where do posterior spinocerebellar fibres enter the ICP?

Answer 36

Rostral medulla

Question 37

Where do fibres in the posterior spinocerebellar tract cross the midline?

Answer 37

They don't! Info to cerebellum remains IPSI always

Question 38

Which fibre types send afferents to Clarke's nucleus?

Answer 38

Ia, Ib, and II (GTO) fibres

Question 39

Which types of information travel in the fasciculus cuneatus until the rostral medulla

Answer 39

Sensory AND proprioceptive information (cuneocerebellar tract does not branch off until reaching the accessory cuneate nucleus)

Question 40

Where do cuneocerebellar fibres originate

Answer 40

Accessory cuneate nucleus (rostral medulla)

Question 41

Where do cuneocerebellar fibres enter the cerebellum

Answer 41

ICP

Question 42

Which spinocerebellar tracts involve SBCs?

Answer 42

1) anterior spinocerebellar tract; 2) rostral spinocerebellar tract

Question 43

Where is the first synapse in the anterior spinocerebellar tract?

Answer 43

SBCs in the anterolateral border of the SC white matter

Question 44

How many times does the anterior spinocerebellar tract cross the midline

Answer 44

Twice

Question 45

How do fibres from anterior spinocerebellar tract enter the cerebellum

Answer 45

Via the SCP

Question 46

Where is the first synapse for the rostral spinocerebellar tract?

Answer 46

SBCs in anterolateral white matter of anterior horn (also receive descending inputs)

Question 47

Where do rostral spinocerebellar fibres cross the midline?

Answer 47

They do not! Only the anterior spinocerebellar tract does

Question 48

Proprioceptive and cutaneous information above T8 travels in which tract to the cerebellum

Answer 48

Rostral spinocerebllar

Question 49

Proprioceptive and cutaneous information below T8 travels in which tract to the cerebellum

Answer 49

Anterior spinocerebellar

Question 50

Where do rostral spinocerebellar tract fibres enter the cerebellum

Answer 50

SCP