14 - Cerebellum and Motion Control (Exam 3)

Question 1

What 4 areas does the cerebellum receive information from?

Answer 1

1. Proprioceptive centers
2. Muscle tone
3. Vestibular information
4. Sensory information

Question 2

What are the 3 surfaces of the cerebellum

Answer 2

1. Superior (touches occipital lobe)
2. Inferior
3. Anterior (facing brainstem)

Question 3

What is the midline structure of the cerebellum?

Answer 3

Vermis

Question 4

What are the folds of the cerebellum called?

Answer 4

Folia

Question 5

How many lobes are found in each hemisphere of the cerebellum and what are they?

Answer 5

1. Anterior lobe
2. Posterior lobe
3. Floccullonodular lobe

Question 6

What is the largest lobe of the cerebellum?

Answer 6

Posterior lobe

Question 7

What can herniation of the cerebellar tonsils cause, and what is it similar to?

Answer 7

Disc edema or nystagmus

Similar to chiari malformation

Question 8

What are the 4 cerebellar nuclei?

Answer 8

1. Dentate nucleus
2. Emboliform nucleus
3. Globose nucleus
4. Fastigial nucleus

Question 9

What is the acronym for remembering the 4 cerebellar nuclei?

Answer 9

Don’t
Eat
Greasy
Food

Question 10

Where is the gray matter found in the cerebellum and how many layers are there?

Answer 10

External

3 layers

Question 11

What are the 3 layers of gray matter in the cerebellum?

Answer 11

1. Molecular layer
2. Purkinje cell layer
3. Granular cell layer

Question 12

What fibers in the cerebellum are responsible for afferent information

Answer 12

Mossy fibers

Climbing fibers

Question 13

Where do fibers in the cerebellum are responsible for efferent information rise from?

Answer 13

Purkinje cells

Question 14

Which cerebellar peduncle carries only afferent information?

Answer 14

Middle cerebellar peduncle

Question 15

What are the 2 types of cerebellar tracts?

Answer 15

Afferent tracts

Efferent tracts

Question 16

Which 2 cerebellar peduncles house both afferent and efferent tracts?

Answer 16

1. Superior cerebellar peduncle

2. Inferior cerebellar peduncle

Question 17

What 4 areas do upper motor neurons receive information from?

Answer 17

1. Motor areas of cortex
2. Vestibular nuclei
3. Reticular formation
4. Red nucleus

Question 18

What 2 areas of lower motor neurons receive information from?

Answer 18

1. Spinal cord

2. Motor nuclei of brainstem

Question 19

What 2 areas do modulators receive information from?

Answer 19

1. Basal ganglia

2. Cerebellum

Question 20

How do lesions of the upper motor neurons present?

Answer 20

Spastic and hyperreflexive contractions

No acute muscle atrophy

Question 21

How do lesions of lower motor neurons present?

Answer 21

Flaccid paralysis

Diminished reflexes