Question 1

Which structure contains cerebrospinal fluid (CSF) and is found in the center of the spinal cord?

Accepted Answer

Central canal

Question 2

A patient presents with loss of taste on the anterior two-thirds of the tongue and weakness in facial expressions. Which cranial nerve is most likely affected?

Accepted Answer

Facial nerve (VII)

Question 3

Which spinal cord enlargement is responsible for the innervation of the upper limbs?

Accepted Answer

Cervical enlargement

Question 4

The dorsal root of a spinal nerve contains bundles of which type of neurons?

Accepted Answer

Sensory neurons

Question 5

A patient is unable to move their eye laterally (away from the midline). Which cranial nerve is most likely damaged?

Accepted Answer

Abducens nerve (VI)

Question 6

Which of the following best describes the function of the vagus nerve (X)?

Accepted Answer

Carries parasympathetic fibers to many organs, affecting heart rate and digestion

Question 7

If the spinal cord is injured at the level of T12, which group of nerves is most likely affected?

Accepted Answer

Lumbar plexus

Question 8

Which equation correctly represents the number of spinal nerve pairs in humans?

Accepted Answer

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

Question 9

A patient has difficulty swallowing and their tongue deviates to one side when protruded. Which cranial nerve is most likely injured?

Accepted Answer

Hypoglossal nerve (XII)

Question 10

Which of the following is a function of the dorsal ramus of a spinal nerve?

Accepted Answer

Serves the posterior skin and muscles of the trunk

Question 11

A patient presents with loss of sensation in the skin over the jaw and difficulty chewing. Which cranial nerve is most likely affected?

Accepted Answer

Trigeminal nerve (V)

Question 12

Which of the following best describes the cauda equina?

Accepted Answer

A bundle of spinal nerve roots extending beyond the conus medullaris

Question 13

Which cranial nerve is responsible for hearing and balance?

Accepted Answer

Vestibulocochlear nerve (VIII)

Question 14

Which of the following is NOT a function of the spinal cord?

Accepted Answer

Producing cerebrospinal fluid

Question 15

Which nerve plexus contains the phrenic nerve, which is essential for breathing?

Accepted Answer

Cervical plexus

Question 16

A patient has difficulty elevating their shoulders and turning their head to the opposite side. Which cranial nerve is most likely affected?

Accepted Answer

Accessory nerve (XI)

Question 17

Which of the following best describes the function of the oculomotor nerve (III)?

Accepted Answer

Controls most eye movements, pupil constriction, and maintaining an open eyelid

Question 18

Which equation correctly represents the relationship between the number of cervical, thoracic, lumbar, sacral, and coccygeal spinal nerves?

Accepted Answer

$N_{total} = N_{cervical} + N_{thoracic} + N_{lumbar} + N_{sacral} + N_{coccygeal}$

Question 19

Which of the following is a real-life consequence of injury to the vestibulocochlear nerve (VIII)?

Accepted Answer

Hearing loss and balance problems

Spinal Nerves and Cranial Nerves: Structure, Function, and Clinical Testing

Study Guide - Practice Questions

Study Guide - Flashcards