Question 1

Which structure marks the inferior end of the adult spinal cord, and at which vertebral level does it typically terminate?

Accepted Answer

Conus medullaris; L1–L2

Question 2

A patient receives an epidural injection for pain relief during childbirth. Into which space is the anesthetic administered?

Accepted Answer

Epidural space

Question 3

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

Accepted Answer

White matter is superficial, gray matter is deep

Question 4

A lumbar puncture (spinal tap) is typically performed below which vertebral level to avoid damaging the spinal cord?

Accepted Answer

L3

Question 5

Which nerve is the major motor branch of the cervical plexus and is essential for breathing?

Accepted Answer

Phrenic nerve

Question 6

Which of the following is TRUE regarding the dorsal root ganglion?

Accepted Answer

It contains cell bodies of sensory neurons

Question 7

Which spinal cord region contains lateral gray horns, and what is their function?

Accepted Answer

Thoracic and lumbar; visceral motor control

Question 8

A patient presents with stabbing pain radiating down the posterior thigh and leg, likely due to a herniated disc. Which nerve is most likely affected?

Accepted Answer

Sciatic nerve

Question 9

Which of the following best describes the function of the rami communicantes?

Accepted Answer

They communicate with the sympathetic chain ganglia

Question 10

Which nerve plexus is responsible for innervating the muscles and skin of the upper limb?

Accepted Answer

Brachial plexus

Question 11

Which of the following is a correct pairing of a spinal nerve and its region?

Accepted Answer

T1; thoracic

Question 12

Which structure anchors the spinal cord to the coccyx and is an extension of the pia mater?

Accepted Answer

Filum terminale

Question 13

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

Accepted Answer

It is divided into six columns called funiculi

Question 14

A patient loses sensation and motor function in the skin and muscles of the back. Which branch of the spinal nerve is most likely damaged?

Accepted Answer

Dorsal ramus

Question 15

Which of the following is TRUE regarding the arrangement of spinal nerves in relation to their corresponding vertebrae?

Accepted Answer

Cervical nerves C1–C7 emerge above their corresponding vertebrae

Question 16

Which nerve of the lumbar plexus innervates the anterior and medial thigh muscles and skin?

Accepted Answer

Femoral nerve

Question 17

Which of the following best describes the function of the central canal of the spinal cord?

Accepted Answer

It is filled with cerebrospinal fluid (CSF)

Question 18

Which nerve is the largest peripheral nerve in the body and divides into the tibial and common fibular nerves?

Accepted Answer

Sciatic nerve

Question 19

Which of the following is a function of the denticulate ligaments?

Accepted Answer

They anchor the spinal cord to the dura mater

Question 20

A patient has lost voluntary motor control to the forearm and hand but retains sensation. Which region of the spinal cord gray matter is most likely damaged?

Accepted Answer

Ventral horn

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

Study Guide - Practice Questions

Study Guide - Flashcards