Cerebellum & Dermatomes

Question 1

What type of cells are found in the Molecular layer of the cerebellum?

Answer 1

Stellate cells and Basket cells

Question 2

What type of neurons are Purkinje cells?

Answer 2

Golgi Type 1 Neurons

Question 3

The context of the vermis influences movements along which parts of the body?

Answer 3

Neck
Shoulder
Hips
Thorax
Abdomen

Question 4

What is the name of the area found laterally to the vermis?

Answer 4

Paravermal area or Intermediate Area.

Question 5

What is the function of the Intermediate area of the Cerebellum?

Answer 5

It controls the muscles of the distal parts of the limbs especially hands and feet.

Question 6

What is the function of the lateral zone of each cerebellar hemisphere?

Answer 6

They are concerned with the planning of sequential movements of the entire body and is involved with the conscious assessment of movement errors.

Question 7

Which nuclei is the largest cerebellar nucleus?

Answer 7

Dentate Nucleus

Question 8

What are the four nuclei that are apart of the Intercerebellar nuclei?

Answer 8

Don’t - Dentate nucleus
Eat- Emboliform nucleus
Greasy - Globose nucleus
Food - Fastigial nucleus

Question 9

What are the three groups of white matter located in the Vermis of the Cerebellum ?

Answer 9

Intrinsic
Afferent
Efferent

Question 10

What are the 5 types of Intrinsic neurons located in the Cerebellar cortex?

Answer 10

Pukinje cells
Stellate cells
Golgi cellls
Basket cells
Granular cells

Question 11

Which type of nuerons in the Cerebellar cortex are strictly EXCITATORY?

Answer 11

Granular cells ( All others are Inhibitory )

Question 12

What are the main constituents of the Archicerebellum ( Vestibular cerebellum)?

Answer 12

The Flocculonodular lobe and Lingula.

Question 13

What are the main constituents of the Paleocerebellum ( Spinal cerebellum)?

Answer 13

It consists of Anterior lobe (except lingula) and pyramid, and the uvula of inferior vermis.

Question 14

Fill in the blanks . “The Neocerebellum ( Cerebral cerebellum ) consists of _________. “

Answer 14

The Middle lobe, the largest part of the cerebellum (except the pyramid and the uvula of inferior vermis).

Question 15

What is the main function of the Archicerebellum ( Vestibular cerebellum)?

Answer 15

The archicerebellum is chiefly vestibular in connections and concerned with the maintenance of equilibrium, tone, and posture of trunk muscles.

Question 16

What is the main function of the Paleocerebellum( Spinal cerebellum) ?

Answer 16

The paleocerebellum is chiefly spinocerebellar in connections and is concerned with the tone, posture, and crude movements of the limbs.

Question 17

What is the main function of the Neocerebellum ( Cerebral cerebellum ) ?

Answer 17

The neocerebellum is chiefly corticopontocerebellar in connections and is concerned with the smooth performance of skilled voluntary movements.

Question 18

Fill in the blanks . “ The globose nucleus and the emboli form nucleus together are referred to as ____________.”

Answer 18

Nucleus interpositus.

Question 19

The Cerebellum receives Information about the skin and Superficial fascia through which tract?

Answer 19

The Anterior Spinocerebellar tract

Question 20

Where is the Inferior Cerebellar Peduncle formed?

Answer 20

It is formed on the posterolateral aspect of the upper half of the medulla oblongata.

Question 21

True or False? Efferent fibres from the Dentate , Emboliform and Globose nuclei leave the cerebellum through the inferior cerebellar peduncle.

Answer 21

FALSE!! They leave the cerebellum though the Superior Cerebellar peduncles

Question 22

Fill in the blanks. “Fibres from the fastigial nucleus leave the through the ____________.”

Answer 22

Inferior cerebellar peduncles

Question 24

Which tract is known as the Double crosser?

Answer 24

The Anterior Spinocerebelllar tract

Question 25

What is the most common cause of Vermis syndrome?

Answer 25

Medulloblastoma

Question 26

Which nucleus of the Thalamus receives neuronal input from Cerebellum?

Answer 26

The Ventral Lateral nucleus

Question 27

Where does the Ventral anterior thalamus receives its input from?

Answer 27

Basal Ganglia

Question 28

Where does the deep cerebellar nucleus receives its afferents from?

Answer 28

+ Inhibitory axons from Purkinje cells + Excitatory axons that are branches of afferent climbing and mossy fibers passing to cortex

Question 29

What substance are used by Purkinje cells?

Answer 29

GABA

Question 30

What substance are used by the Climbing and mossy fibres?

Answer 30

Glutamate

Question 31

Which nucleus is the Inferiorly displaced Pontine nuclei?

Answer 31

Arcuate nucleus

Question 32

What are the three functional areas of the Cerebellum?

Answer 32

+ Cortex of vermis influences movements of long axis of body (neck, shoulders, thorax, abdomen, hips) + Intermediate zone (lateral to vermis): control muscles of distal parts of limbs (especially hands and feet) + Lateral zone of each cerebellar hemisphere: planning of sequential movements of entire body and conscious assessment of movement errors.

Question 33

What are the three different groups of White matter fibres found in the Cerebellum?

Answer 33

* Intrinsic Fibres * Afferent Fibres * Efferent Fibres

Question 34

Which fibres of the cerebellum do not leave cerebellum but connect different areas of it (e.g., connection of 2 cerebellar hemispheres together, or vermis with cerebellar cortex on same side) ?

Answer 34

Intrinsic fibres

Question 35

Fill in the blanks. " Afferent fibres enter the cerebellum through _________ &___________."

Answer 35

Middle & Inferior peduncles

Question 36

Fibres from which deep nuclei leave through the Inferior cerebellar peduncle?

Answer 36

Fastigial nucleus

Question 37

Fibres from the dentate , globose & emboli form nuclei leave through ?

Answer 37

Superior peduncle

Question 38

Where does the Deep Cerebellar nuclei receive afferent information from?

Answer 38

* Inhibitory axons from Purkinje cells. * Excitatory axons that are branches of afferent climbing and mossy fibers passing to cortex.

Question 39

True or False? All afferent fibers from inner ear terminate as mossy fibers in flocculonodular lobe of cerebellum .

Answer 39

TRUE!!