Question 1

Which cranial nerve is responsible for transmitting visual information from the retina to the brain?

Accepted Answer

Optic nerve (CN II)

Question 2

A patient presents with loss of sensation in the forehead, upper jaw, and lower jaw, as well as difficulty chewing. Which cranial nerve is most likely affected?

Accepted Answer

Trigeminal nerve (CN V)

Question 3

Which of the following best describes the function of the trochlear nerve (CN IV)?

Accepted Answer

Motor: Movement of the eye

Question 4

The parasympathetic division of the autonomic nervous system is also known as the:

Accepted Answer

Craniosacral division

Question 5

Which structure is responsible for producing aqueous humor in the eye?

Accepted Answer

Ciliary body

Question 6

A lesion in the vagus nerve (CN X) would most likely affect which of the following functions?

Accepted Answer

Sensory and motor innervation of the larynx, and parasympathetic control of thoracic and abdominal organs

Question 7

Which cranial nerve is responsible for taste sensation from the posterior one-third of the tongue?

Accepted Answer

Glossopharyngeal nerve (CN IX)

Question 8

Which of the following is the correct order for the flow of aqueous humor in the eye?

Accepted Answer

Produced by ciliary body → flows through pupil → anterior chamber → drains via trabecular meshwork into Schlemm’s canal

Question 9

Which cranial nerve innervates the muscles of facial expression and provides taste sensation to the anterior two-thirds of the tongue?

Accepted Answer

Facial nerve (CN VII)

Question 10

A patient with a perforated tympanic membrane would most likely experience which of the following symptoms?

Accepted Answer

Reduced ability to transmit sound vibrations to the ossicles, resulting in hearing loss

Question 11

Which of the following best describes the organization of the autonomic nervous system (ANS)?

Accepted Answer

A two-neuron pathway with a preganglionic neuron in the CNS and a postganglionic neuron in the PNS

Question 12

Which cranial nerve is responsible for transmitting information about hearing and equilibrium to the brain?

Accepted Answer

Vestibulocochlear nerve (CN VIII)

Question 13

Which of the following is a function of the ciliary muscles in the eye?

Accepted Answer

Control the shape of the lens

Question 14

Which of the following statements about spinal nerves is correct?

Accepted Answer

There are 31 pairs of spinal nerves, each formed by the union of posterior (sensory) and anterior (motor) roots

Question 15

Which of the following best describes the function of the organ of Corti?

Accepted Answer

It contains hair cells that convert sound vibrations into nerve impulses

Question 16

Which cranial nerve innervates the trapezius and sternocleidomastoid muscles?

Accepted Answer

Accessory nerve (CN XI)

Question 17

Which of the following is a distinguishing feature of the sympathetic nervous system compared to the parasympathetic nervous system?

Accepted Answer

Has a thoracolumbar origin and a widespread effect on the body

Question 18

Which structure in the inner ear is primarily responsible for detecting rotational movement of the head?

Accepted Answer

Semicircular canals

Question 19

A patient is unable to move their tongue properly. Which cranial nerve is most likely damaged?

Accepted Answer

Hypoglossal nerve (CN XII)

Question 20

Which of the following best explains the functional importance of nerve plexuses in the body?

Accepted Answer

They ensure that muscles receive innervation from multiple spinal nerves, providing redundancy in case of injury

Peripheral Nervous System, Autonomic Nervous System, and Special Senses: Eye and Ear

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