cerebellum neurophysiology

Question 1

Which of the following is not a major function of the cerebellum?
a. Coordination of movement
b. Regulation of muscle tone
c. Control of respiration
d. Balance and posture

Answer 1

Answer: c. Control of respiration

Question 2

The cerebellum receives inputs from which of the following structures?
a. Spinal cord and brainstem
b. Basal ganglia and thalamus
c. Cortex and hippocampus
d. Pineal gland and hypothalamus

Answer 2

Answer: a. Spinal cord and brainstem

Question 3

Which type of neuron is the main output of the cerebellar cortex?
a. Purkinje cells
b. Granule cells
c. Basket cells
d. Golgi cells

Answer 3

Answer: a. Purkinje cells

Question 4

The climbing fiber pathway provides input to the cerebellum from which structure?
a. Vestibular nuclei
b. Inferior olivary nucleus
c. Red nucleus
d. Substantia nigra

Answer 4

Answer: b. Inferior olivary nucleus

Question 5

Which of the following is not a major cerebellar pathway?
a. Vestibulocerebellar pathway
b. Spinocerebellar pathway
c. Olivocerebellar pathway
d. Thalamocerebellar pathway

Answer 5

Answer: d. Thalamocerebellar pathway

Question 6

Which of the following neurotransmitters is primarily released by cerebellar neurons?
a. Acetylcholine
b. Dopamine
c. Norepinephrine
d. GABA

Answer 6

Answer: d. GABA

Question 7

The vestibulocerebellum is responsible for which of the following functions?
a. Coordination of eye movements
b. Regulation of muscle tone
c. Control of posture and balance
d. Planning and execution of movements

Answer 7

Answer: c. Control of posture and balance

Question 8

Which of the following is not a characteristic of long-term depression (LTD) at the cerebellar synapse?
a. Decreased synaptic strength
b. Decreased number of synaptic receptors
c. Requires simultaneous activation of parallel fibers and climbing fibers
d. Involves activation of protein phosphatases

Answer 8

Answer: b. Decreased number of synaptic receptors

Question 9

Which of the following is not a component of the cerebellar circuitry?
a. Mossy fibers
b. Climbing fibers
c. Granule cells
d. Pyramidal cells

Answer 9

Answer: d. Pyramidal cells

Question 10

The cerebellum plays a critical role in which type of learning?
a. Associative learning
b. Classical conditioning
c. Operant conditioning
d. Both b and c

Answer 10

Answer: d. Both b and c