1. Which of the following cranial nerves is responsible for

transmitting sensory information from the face, mouth, and

anterior two-thirds of the tongue?

a) Trigeminal nerve

b) Facial nerve

c) Glossopharyngeal nerve

d) Vagus nerve

*Answer: a) Trigeminal nerve*

Rationale: The trigeminal nerve (CN V) is the largest

cranial nerve and has three branches: ophthalmic,

maxillary, and mandibular. It conveys somatosensory

information from the face, mouth, and anterior two-thirds

of the tongue, as well as motor innervation to the muscles

of mastication.

2. Which of the following structures is part of the

vestibular system and contains hair cells that detect linear

acceleration and deceleration?

a) Semicircular canals

b) Utricle

c) Saccule

d) Cochlea

*Answer: c) Saccule*

Rationale: The vestibular system consists of two otolith

organs (utricle and saccule) and three semicircular canals.

The otolith organs contain hair cells that are embedded in a

gelatinous matrix with calcium carbonate crystals

(otoconia). The saccule is oriented vertically and responds

to linear acceleration and deceleration in the vertical plane,