Cerebellum

Question 1

The cerebellum is the largest part of the …

Answer 1

the cerebellum is the largest part of the hindbrain

Question 2

what does the cerebellum occupy most of?

Answer 2

the cerebellum occupies most of posterior cranial fossa

Question 3

what separates the cerebellum from the occipital lobes[of cerebellum?

Answer 3

the tentorium cerebelli separates the cerebellum from the occipital lobes of cerebral hemispheres

Question 4

what does the cerebellum lie dorsal to?

Answer 4

the cerebellum lies dorsal to the pons and medulla

Question 5

what separates the cerebellum from the pons and medulla?

Answer 5

the 4th ventricle separates the cerebellum from the pons and medulla

Question 6

what joins the cerebellum to the brain stem?

Answer 6

the 3 bilaterally paired cerebellar peduncles

Question 7

what do these 3 bilaterally paired cerebellar peduncles contain?

Answer 7

all the efferent and afferent fibres associated with the cerebellum

Question 8

what does the cerebellum consist of?

Answer 8

the cerebellum Consists of two cerebellar hemispheres connected to each other through median
vermis

Question 9

list the 2 surfaces of the cerebellum.

Answer 9

cerebellum surfaces :

1. superior
2. inferior

Question 10

describe the superior surface of the cerebellum.

Answer 10

the superior surface of the cerebellum is convex

Question 11

what does the inferior surface[of the cerebellum] show that separates the right and left hemispheres?

Answer 11

The Inferior surface shows a deep median notch – vallecula – separates right & left
hemispheres

Question 12

what is the anterior aspect of cerebellum marked by?

Answer 12

The Anterior aspect of the cerebellum is marked by a deep notch- occupied by pons &
medulla

Question 13

CEREBELLUM - Posteriorly. what is the narrow deep notch occupied by?

Answer 13

The narrow deep notch occupied by falx cerebelli

Question 14

list the 3 lobes that each hemisphere[of the cerebellum] is divided into?

Answer 14

anterior lobe
posterior[middle] lobe
flocculonodular lobe

Question 15

where does the anterior lobe lie on?

Answer 15

the anterior lobe Lies on anterior part of superior surface

Question 16

what separates the anterior lobe from the middle lobe?

Answer 16

the anterior lobe is separated from the middle lobe by the primary fissure

Question 17

name the largest lobe of the cerebellum.

Answer 17

Posterior (Middle) Lobe

Question 18

what limits the posterior(middle) lobe in front on the superior surface?

Answer 18

the primary fissure limits the posterior(middle) lobe on the superior surface

Question 19

what limits the posterior(middle) lobe in front on the inferior surface?

Answer 19

the posterolateral fissure limits the posterior(middle) lobe on the inferior surface

Question 20

name the smallest lobe of the cerebellum.

Answer 20

Flocculonodular Lobe

Question 21

what does the Flocculonodular Lobe lie on?

Answer 21

the Flocculonodular Lobe on the interior surface in front of the posterolateral fissure

Question 22

what is the cerebellum divided into?

Answer 22

the cerebellum is Divided into numerous small parts by fissures

Question 23

what does each fissure cut?

Answer 23

Each fissure cuts the vermis & both hemispheres

Question 24

what separates the superior and inferior surface?

Answer 24

the horizontal fissure separates the superior and inferior surface

Question 25

what separates the anterior surface from the middle lobe on the superior surface?

Answer 25

the PRIMARY FISSURE separates the anterior lobe from the middle lobe on the superior surface

Question 26

what separates the middle[ posterior lobe from the flocculonodular lobe on inferior surface?

Answer 26

the POSTEROLATERAL FISSURE separates the middle[posterior lobe] from the flocculonodular lobe on inferior surface

Question 27

List the parts of the vermis (inferiorly)

Answer 27

Tuber Pyramid Uvula Nodule

Question 28

List the subdivisions of the cerebellar hemispheres (superiorly)

Answer 28

* Simple lobule superior * Superior semilunar lobule * Inferior semilunar lobule

Question 29

List the subdivisions of the cerebellar hemispheres (inferiorly)

Answer 29

* Ala * Quadrangular lobule * Biventral lobule * Tonsil * Flocculus

Question 30

List the morphological and functional divisions.

Answer 30

Archiocerebellum Paleocerebellum Neocerebellum

Question 31

What is the archicerebellum made up of?

Answer 31

The archicerebellum is made up of flocculonodular lobe and lingula

Question 32

What does the archicerebellum control?

Answer 32

The archicerebellum controls axial musculature and bilateral movements

Question 33

What is the axial musculature and bilateral movements used for?

Answer 33

The axial musculature and bilateral movements are used for locomotion and maintenance of equilibrium

Question 34

The archicerebellum is chiefly...

Answer 34

The archicerebellum is chiefly vestibular in its | connections

Question 35

What is the paleocerebellum made up of?

Answer 35

The paleocerebellum is made up of the anterior lobe , pyramid , uvula

Question 36

The connections of the paleocerebellum are chiefly..

Answer 36

The connections of the paleocerebellum are chiefly spinocerebellar

Question 37

What does the paleocerebellum control?

Answer 37

The paleocerebellum controls the tone , posture and crude movements of the limbs

Question 38

What is the neocerebellum made up of?

Answer 38

The neocerebellum is made up of the middle lobe(largest part of the cerebellum) minus the pyramid and uvula of inferior vermis

Question 39

The neocerebellum is chiefly ... in its connections

Answer 39

Cortico - cerebellar

Question 40

What is the neocerebellum concerned with?

Answer 40

The neocerebellum is concerned with the regulation of fine movements

Question 41

How are 3 peduncles formed?

Answer 41

The fibres entering or leaving the cerebellum are grouped to form 3 peduncles

Question 42

What do those 3 peduncles connect the cerebellum to?

Answer 42

Those 3 peduncles connect the cerebellum to the mid brain , pons and medulla

Question 43

What does the grey matter of the cerebellum consist of?

Answer 43

The grey matter of the cerebellum consists of cerebellar cortex and cerebellar nuclei

Question 44

List the 4 pairs of nuclei

Answer 44

* Dentate nucleus * Globose nucleus * Emboliform nucleus * Nucleus fastigii

Question 45

What does the cerebellum control?

Answer 45

The cerebellum controls the same side of the body (I.e. the influence is ipsilateral.

Question 46

What is chiefly done by the neocerebellum

Answer 46

The coordination of voluntary movements (so that they are smooth , balanced and accurate) is chiefly done by the neocerebellum

Question 47

What does dysfunction give rise to?

Answer 47

Dysfunction gives rise to incoordination of movements

Question 48

What is chiefly done by the archicerebellum and paleocerebellum?

Answer 48

The control of tone , posture and equilibrium

Question 49

What do the cerebellar lesions give rise to

Answer 49

Cerebellar lesions give rise to hypotonia and disturbances of equilibrium