Question 1

Which of the following best describes the difference between the dorsal and ventral roots of the spinal cord?

Accepted Answer

The dorsal root carries sensory information toward the spinal cord, while the ventral root carries motor information away from the spinal cord.

Question 2

A patient presents with loss of pain and temperature sensation on the right side of the body below the waist, but touch and proprioception are intact. Which spinal tract is most likely damaged?

Accepted Answer

Spinothalamic tract

Question 3

Which of the following is a correct statement about the organization of gray and white matter in the spinal cord?

Accepted Answer

White matter is located on the outside, and gray matter is on the inside.

Question 4

Which of the following cranial nerves is purely sensory?

Accepted Answer

Olfactory nerve (I)

Question 5

A patient is unable to move their right arm voluntarily, but reflexes are intact. Which neural structure is most likely damaged?

Accepted Answer

Corticospinal tract

Question 6

Which of the following best describes the function of the basal ganglia in voluntary movement?

Accepted Answer

Initiates voluntary movement and suppresses unwanted movements.

Question 7

Which equation correctly represents the relationship between the number of spinal nerves ($$N$$), cervical nerves ($$C$$), thoracic nerves ($$T$$), lumbar nerves ($$L$$), sacral nerves ($$S$$), and coccygeal nerves ($$Co$$)?

Accepted Answer

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

Question 8

Which of the following is a characteristic of the sympathetic nervous system?

Accepted Answer

Short preganglionic axons and long postganglionic axons

Question 9

Which neurotransmitter is released by postganglionic sympathetic neurons at most target organs?

Accepted Answer

Norepinephrine

Question 10

A patient has difficulty with fine touch and proprioception but normal pain and temperature sensation. Which pathway is most likely affected?

Accepted Answer

Dorsal column-medial lemniscus pathway

Question 11

Which of the following best describes a monosynaptic reflex arc?

Accepted Answer

It involves only a sensory neuron and a motor neuron.

Question 12

Which cranial nerve is responsible for both sensory and motor functions in the face, including chewing?

Accepted Answer

Trigeminal nerve (V)

Question 13

Which of the following is true regarding the parasympathetic nervous system?

Accepted Answer

It has long preganglionic and short postganglionic fibers.

Question 14

Which structure is primarily responsible for coordinating balance and fine motor control?

Accepted Answer

Cerebellum

Question 15

Which of the following best describes the function of the sensory homunculus?

Accepted Answer

It represents the relative sensory input from different body regions to the cerebral cortex.

Question 16

Which of the following is the correct order of the components in a typical reflex arc?

Accepted Answer

Receptor → Sensory neuron → Interneuron → Motor neuron → Effector

Question 17

Which of the following best describes the function of the corticospinal tract?

Accepted Answer

Carries voluntary motor commands from the cerebral cortex to the spinal cord.

Question 18

Which of the following is a function of the dorsal column-medial lemniscus pathway?

Accepted Answer

Transmits fine touch, vibration, and proprioception.

Question 19

Which of the following best describes the general function of the autonomic nervous system?

Accepted Answer

Regulates involuntary functions such as heart rate, digestion, and respiratory rate.

Question 20

Which of the following is true regarding the naming of spinal nerves?

Accepted Answer

Cervical spinal nerves are named for the vertebra above them, except C8.

Study Guide: Nervous System – Spinal Cord, CNS Sensation, PNS, Reflexes, and Autonomic Nervous System

Study Guide - Practice Questions

Study Guide - Flashcards