Question 1

Which structure of the spinal cord contains cerebrospinal fluid and is located at the center of the gray commissure?

Accepted Answer

Central canal

Question 2

A patient presents with loss of motor function in the right arm. Damage to which spinal cord structure is most likely responsible?

Accepted Answer

Anterior horn

Question 3

The spinal cord is divided into two regions by which anatomical features?

Accepted Answer

Anterior median fissure and posterior median sulcus

Question 4

Which of the following best describes the function of the dorsal root of a spinal nerve?

Accepted Answer

Carries sensory information to the spinal cord

Question 5

If the ventral root of a spinal nerve is severed, which function will be lost?

Accepted Answer

Motor control of muscles

Question 6

Which spinal nerve plexus is responsible for innervating the diaphragm via the phrenic nerve?

Accepted Answer

Cervical plexus

Question 7

A patient has lost sensation in the lateral forearm. Which nerve is most likely damaged?

Accepted Answer

Musculocutaneous nerve

Question 8

Which equation correctly represents the number of pairs of spinal nerves in the human body?

Accepted Answer

$$\ 8 + 12 + 5 + 5 + 1 = 31 \ $$

Question 9

Damage to the lumbar plexus would most likely affect which of the following nerves?

Accepted Answer

Femoral nerve

Question 10

Which of the following is a correct pathway for a sensory impulse entering the spinal cord?

Accepted Answer

Dorsal root → posterior horn → ascending tract

Question 11

A patient with injury to the sacral plexus may experience difficulty with which function?

Accepted Answer

Leg movement and foot sensation

Question 12

Which of the following statements about the gray matter of the spinal cord is correct?

Accepted Answer

It contains neuron cell bodies and dendrites

Question 13

Which nerve is most likely affected if a patient cannot extend their wrist and fingers?

Accepted Answer

Radial nerve

Question 14

If the dorsal root ganglion is damaged, which type of neuron is most affected?

Accepted Answer

Sensory neuron

Question 15

Which of the following best describes the arrangement of white and gray matter in the spinal cord?

Accepted Answer

White matter is peripheral, gray matter is central

Question 16

A patient is unable to flex their elbow after a traumatic injury. Which nerve is most likely damaged?

Accepted Answer

Musculocutaneous nerve

Question 17

Which spinal cord region is associated with the greatest number of spinal nerves?

Accepted Answer

Thoracic

Question 18

Which equation represents the total number of cervical spinal nerves?

Accepted Answer

$$\ 8 \ $$

Question 19

Which of the following is a function of the anterior horn of the spinal cord?

Accepted Answer

Contains motor neuron cell bodies

Question 20

A patient with damage to the femoral nerve would most likely have difficulty with which activity?

Accepted Answer

Extending the knee

Spinal Cord and Spinal Nerves: Structure, Function, and Organization

Study Guide - Practice Questions