Question 1

Which structure is responsible for carrying sensory information toward the central nervous system (CNS)?

Accepted Answer

Sensory (afferent) neurons

Question 2

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

Accepted Answer

31

Question 3

Which of the following best describes the flow of cerebrospinal fluid (CSF) in the spinal cord?

Accepted Answer

CSF flows within the subarachnoid space

Question 4

Which of the following is NOT a major nerve plexus of the peripheral nervous system?

Accepted Answer

Thoracic

Question 5

A patient suffers a spinal cord injury that damages the dorsal root of a spinal nerve. Which function is most likely to be affected?

Accepted Answer

Sensory perception from the body

Question 6

Which meningeal layer is located directly deep to the dura mater?

Accepted Answer

Arachnoid mater

Question 7

If a patient has a lesion affecting the ventral root of a spinal nerve, which of the following symptoms would you expect?

Accepted Answer

Paralysis of muscles innervated by that nerve

Question 8

Which equation best represents the relationship between the number of spinal nerves and the number of vertebrae in the human body?

Accepted Answer

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

Question 9

Which of the following best describes the organization of the peripheral nervous system (PNS)?

Accepted Answer

The PNS consists of nerves and ganglia outside the CNS

Question 10

A patient presents with loss of function in the lumbar plexus. Which region of the body is most likely to be affected?

Accepted Answer

Lower limb

Question 11

Which of the following is the correct order of the meninges from superficial to deep?

Accepted Answer

Dura mater, arachnoid mater, pia mater

Question 12

Which space contains the blood vessels that supply the spinal cord?

Accepted Answer

Subarachnoid space

Question 13

Which of the following best describes the function of the brachial plexus?

Accepted Answer

Innervates the muscles and skin of the upper limb

Question 14

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

Accepted Answer

The spinal cord ends at approximately the level of the first or second lumbar vertebra

Question 15

Which of the following is a real-life consequence of damage to the cervical plexus?

Accepted Answer

Difficulty breathing due to diaphragm paralysis

Chapter 13 Guided Notes

Study Guide - Practice Questions