Question 1

Which of the following best describes the difference between gray matter and white matter in the central nervous system?

Accepted Answer

Gray matter consists of unmyelinated somas, dendrites, and axons, while white matter consists mainly of myelinated axons.

Question 2

A patient suffers damage to the dorsal root of a spinal nerve. Which function is most likely to be impaired?

Accepted Answer

Sensory (afferent) input to the central nervous system

Question 3

Which region of the brainstem is primarily responsible for controlling eye movements and relaying auditory and visual reflexes?

Accepted Answer

Midbrain (mesencephalon)

Question 4

The reticular formation is most directly involved in which of the following functions?

Accepted Answer

Regulating consciousness, arousal, and attention

Question 5

Which structure acts as the main relay center for sensory information entering the brain, directing it to appropriate cortical areas?

Accepted Answer

Thalamus

Question 6

If the pyramids of the medulla are damaged, which function is most likely to be affected?

Accepted Answer

Decussation (crossing over) of corticospinal tracts, affecting voluntary motor control

Question 7

Which equation best represents the relationship between the number of spinal nerve pairs and the regions of the spinal cord?

Accepted Answer

$$N = C + T + L + S + Co$$

Question 8

Which of the following is a function of the cerebellum?

Accepted Answer

Regulating posture and balance

Question 9

A spinal reflex is best described as:

Accepted Answer

A response initiated by the spinal cord without input from the brain

Question 10

Which pathway carries motor commands from the brain to the muscles?

Accepted Answer

Descending tracts in the ventral and interior lateral columns

Question 11

Damage to the reticular activating system (RAS) can result in which clinical outcome?

Accepted Answer

Coma

Question 12

Which of the following best describes the function of the hypothalamic-hypophyseal portal system?

Accepted Answer

It transports neurohormones from the hypothalamus to the anterior pituitary.

Question 13

Which of the following is true regarding the posterior pituitary?

Accepted Answer

It is composed of neural tissue and releases neurohormones synthesized in the hypothalamus.

Question 14

Which structure is responsible for cyclically releasing melatonin to regulate sleep/wake cycles?

Accepted Answer

Pineal gland

Question 15

Which of the following best describes the function of the thalamus?

Accepted Answer

It relays sensory information from the optic tract, ears, and spinal cord to relevant sensory areas in the cortex.

Question 16

Which equation would you use to calculate the total number of neurons in the human brain if each neuron contains an average of $$S$$ synapses and there are $$N$$ neurons?

Accepted Answer

$$T = N 	imes S$$

Question 17

Which of the following is NOT a function of the medulla oblongata?

Accepted Answer

Relay of sensory information from the cerebellum to the cortex

Question 18

Which of the following best describes the role of the cerebellum in movement?

Accepted Answer

It processes sensory information related to movement and sends feedback signals to correct errors and smooth movements.

Question 19

Which of the following statements about nuclei and ganglia is correct?

Accepted Answer

Nuclei are clusters of cell bodies in the central nervous system, while ganglia are clusters in the peripheral nervous system.

Question 20

Which of the following best explains why the brain is considered the ultimate emergent property?

Accepted Answer

Because groups of neurons form circuits, pathways, and networks that collectively produce complex behaviors not predictable from individual neuron function.

neuro 7

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드