Question 1

Which meningeal layer is in direct contact with the spinal cord and is highly vascular?

Accepted Answer

Pia mater

Question 2

A patient suffers a traumatic injury resulting in blood accumulation between the dura mater and the arachnoid mater. What is this condition called?

Accepted Answer

Subdural hematoma

Question 3

Which structure anchors the spinal cord to the coccyx?

Accepted Answer

Filum terminale

Question 4

The anterior (ventral) horn of the spinal cord gray matter contains cell bodies for which type of neurons?

Accepted Answer

Lower motor neurons

Question 5

Which tract is responsible for transmitting pain and temperature sensations to the brain?

Accepted Answer

Lateral spinothalamic tract

Question 6

A patient presents with loss of discriminative touch and proprioception below the waist. Which tract is most likely damaged?

Accepted Answer

Fasciculus gracilis

Question 7

Which nerve is responsible for innervating the diaphragm and is essential for breathing?

Accepted Answer

Phrenic nerve

Question 8

If the median nerve is damaged at the wrist, which function is most likely impaired?

Accepted Answer

Flexion of the wrist and thumb opposition

Question 9

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

Accepted Answer

Innervate smooth muscle and glands

Question 10

A patient cannot extend their wrist and fingers after a humeral fracture. Which nerve is most likely injured?

Accepted Answer

Radial nerve

Question 11

Which of the following is the correct order of connective tissue coverings from outermost to innermost in a spinal nerve?

Accepted Answer

Epineurium, perineurium, endoneurium

Question 12

Which region of the spinal cord is responsible for the origin of sympathetic and parasympathetic efferent nerves?

Accepted Answer

Lateral horn

Question 13

A patient has lost sensation and motor function in the anterior and lateral trunk and upper extremities. Which branch of the spinal nerve is most likely damaged?

Accepted Answer

Anterior (ventral) ramus

Question 14

Which of the following best describes a reflex?

Accepted Answer

A fast, predictable automatic response to a change in the environment

Question 15

Which component of the reflex arc is responsible for relaying information to motor neurons and other neurons at the same or different spinal levels?

Accepted Answer

Integrating center

Question 16

If the anterior corticospinal tract is damaged, which function is most likely affected?

Accepted Answer

Movement of the trunk muscles

Question 17

Which spinal nerve plexus is responsible for innervating the skin and muscles of the head, neck, and upper shoulders?

Accepted Answer

Cervical plexus

Question 18

A patient presents with loss of motor function in the quadriceps muscle. Which nerve is most likely affected?

Accepted Answer

Femoral nerve

Question 19

Which of the following best describes the cauda equina?

Accepted Answer

A bundle of nerve root fibers extending from the lower parts of the spinal cord

Question 20

Which of the following is TRUE regarding the central canal of the spinal cord?

Accepted Answer

It is filled with cerebrospinal fluid (CSF)

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

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