Question 1

Which cranial nerve actually has branches that extend below the neck, innervating structures in the thorax and abdomen?

Accepted Answer

Vagus nerve (Cranial Nerve X)

Question 2

Where is the spinal cord located in relation to the vertebral column?

Accepted Answer

Within the vertebral canal, protected by vertebrae

Question 3

Which of the following best describes the function of white matter in the spinal cord?

Accepted Answer

It transmits nerve impulses between different parts of the CNS.

Question 4

How many pairs of spinal nerves are there in the human body?

Accepted Answer

31 pairs

Question 5

Which meningeal layer is closest to the spinal cord?

Accepted Answer

Pia mater

Question 6

What is the name of the space between the arachnoid mater and pia mater, and what is its significance?

Accepted Answer

Subarachnoid space; it contains cerebrospinal fluid (CSF)

Question 7

Which structure is responsible for producing cerebrospinal fluid (CSF)?

Accepted Answer

Choroid plexus

Question 8

A patient suffers a spinal cord injury at the level of T12. Which of the following is the most likely effect?

Accepted Answer

Loss of motor and sensory function in the lower limbs

Question 9

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

Accepted Answer

It carries sensory information into the spinal cord.

Question 10

Which equation correctly represents the relationship between the number of spinal nerves ($$N) $$and the number of vertebrae ($$V) in $$the human body?

Accepted Answer

$$N = 31$$, $$V = 33$$; $$N \u003c V$$

Question 11

Which of the following is NOT a function of cerebrospinal fluid (CSF)?

Accepted Answer

Transmitting electrical impulses between neurons

Question 12

A patient presents with loss of sensation but preserved motor function in the right leg. Which part of the spinal cord is most likely damaged?

Accepted Answer

Right dorsal column

Question 13

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

Accepted Answer

Gray matter is central, surrounded by white matter

Question 14

Which of the following is a real-life consequence of damage to the ventral root of a spinal nerve?

Accepted Answer

Loss of motor function in the affected area

Question 15

Which of the following best explains why the spinal cord does not extend the entire length of the vertebral column?

Accepted Answer

The vertebral column grows faster than the spinal cord during development

Question 16

Which of the following structures is found in the central canal of the spinal cord?

Accepted Answer

Cerebrospinal fluid (CSF)

Question 17

Which of the following is the correct order of the meninges from outermost to innermost?

Accepted Answer

Dura mater, arachnoid mater, pia mater

Question 18

A patient has a lesion affecting the lateral horn of the spinal cord. Which function is most likely impaired?

Accepted Answer

Autonomic (sympathetic) function

Question 19

Which of the following best describes the cauda equina?

Accepted Answer

A bundle of spinal nerve roots below the end of the spinal cord

Question 20

If $$I is $$the level of injury to the spinal cord and $$F is $$the functional loss, which equation best represents the relationship between injury level and functional loss?

Accepted Answer

$$F \propto I ($$higher injury level, greater functional loss)

The Spinal Cord: Structure, Function, and Clinical Considerations

Study Guide - Practice Questions

Study Guide - Flashcards