Question 1

Which of the following best describes the function of the auditory ossicles in the middle ear?

Accepted Answer

They transmit and amplify sound vibrations from the tympanic membrane to the inner ear.

Question 2

Which structure in the ear is responsible for converting sound vibrations into nerve impulses?

Accepted Answer

Spiral organ (organ of Corti)

Question 3

A patient presents with difficulty equalizing ear pressure when flying. Which structure is most likely not functioning properly?

Accepted Answer

Auditory (eustachian) tube

Question 4

Which fluid fills the scala media (cochlear duct) and is most similar in composition to intracellular fluid?

Accepted Answer

Endolymph

Question 5

What is the primary function of the otolithic membrane in the vestibular system?

Accepted Answer

To enhance the sense of gravity and motion by bending hair cell stereocilia

Question 6

Which of the following best explains why the optic disc is known as the 'blind spot'?

Accepted Answer

It lacks photoreceptors entirely.

Question 7

During the near response (accommodation reflex), which of the following occurs to focus on a close object?

Accepted Answer

The ciliary muscles contract, causing the lens to bulge.

Question 8

Which type of photoreceptor is primarily responsible for color vision and high visual acuity?

Accepted Answer

Cones

Question 9

A person spins rapidly and then stops, feeling dizzy. Which structure is most directly responsible for detecting this angular acceleration?

Accepted Answer

Semicircular ducts

Question 10

Which of the following best describes the role of the basilar membrane in hearing?

Accepted Answer

It vibrates in response to sound, pushing hair cell stereocilia against the tectorial membrane.

Question 11

Which cranial nerve transmits auditory information from the cochlea to the brain?

Accepted Answer

Vestibulocochlear (CN VIII)

Question 12

Which of the following is a function of cerumen (earwax) in the auditory canal?

Accepted Answer

Blocks foreign particles and inhibits bacterial growth

Question 13

Which of the following best describes the function of the maculae in the utricle and saccule?

Accepted Answer

Detects static equilibrium and linear acceleration

Question 14

Which of the following statements about rods is correct?

Accepted Answer

They are involved in motion and peripheral vision.

Question 15

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

Accepted Answer

Ciliary bodies

Question 16

Which of the following best explains why peripheral vision is more effective in low-light conditions?

Accepted Answer

The edges of the retina have a higher concentration of rods.

Question 17

Which of the following is NOT a function of the sclera?

Accepted Answer

Admits light into the eye

Question 18

Which process occurs when the parasympathetic nervous system stimulates the eye?

Accepted Answer

Pupillary constriction

Question 19

Which membrane separates the scala vestibuli from the scala media in the cochlea?

Accepted Answer

Vestibular membrane

Question 20

Which of the following best describes the sequence of events in the transmission of sound from the outer ear to the inner ear?

Accepted Answer

Sound waves → tympanic membrane → auditory ossicles → oval window → perilymph movement

Anatomy & Physiology Study Guide: Sense Organs (Hearing & Equilibrium, Vision)

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