Question 1

Which of the following best describes the process of sensory transduction in special senses?

Accepted Answer

Conversion of a physical or chemical stimulus into an action potential that can be interpreted by the brain.

Question 2

A patient presents with gradual loss of peripheral vision and increased intraocular pressure. Which condition is most likely responsible?

Accepted Answer

Glaucoma

Question 3

Which cranial nerve is responsible for transmitting taste stimuli from the anterior two-thirds of the tongue?

Accepted Answer

Facial nerve (VII)

Question 4

Which of the following best explains why humans are most sensitive to bitter tastes?

Accepted Answer

Many bitter compounds are toxic, so sensitivity serves as a protective function.

Question 5

Which structure in the eye is responsible for most of the eye’s refractive power?

Accepted Answer

Cornea

Question 6

A person with red-green color blindness is most likely to have a defect in which of the following?

Accepted Answer

Red or green cones

Question 7

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

Accepted Answer

It separates the cochlear duct from the scala vestibuli and supports the spiral organ.

Question 8

Which of the following is the correct sequence for the transmission of auditory signals from the cochlea to the primary auditory cortex?

Accepted Answer

Cochlear nerve → inferior colliculus → medial geniculate nucleus → primary auditory cortex

Question 9

Which of the following best explains why a detached retina can lead to permanent vision loss?

Accepted Answer

The retina loses its blood supply and photoreceptors die.

Question 10

Which process allows the lens to increase its curvature to focus on near objects?

Accepted Answer

Accommodation

Question 11

A patient is unable to detect rotational movements of the head but can still sense linear acceleration. Which structure is most likely damaged?

Accepted Answer

Semicircular ducts

Question 12

Which of the following best describes the function of the otolithic membrane in the vestibular system?

Accepted Answer

It contains otoliths that move in response to gravity and linear acceleration, bending hair cells.

Question 13

Which of the following is true regarding the olfactory pathway?

Accepted Answer

Olfactory stimuli travel directly to the primary olfactory cortex without synapsing in the thalamus.

Question 14

Which of the following best explains why spicy foods cause a burning sensation?

Accepted Answer

They stimulate pain and heat receptors in the trigeminal nerve.

Question 15

Which of the following is a function of the tarsal glands in the eyelids?

Accepted Answer

Secrete oil to lubricate the eyelids and prevent tear evaporation.

Question 16

Which of the following best describes the effect of light on rod photoreceptors?

Accepted Answer

Light causes sodium channels to close, hyperpolarizing the cell.

Question 17

A patient with sensorineural hearing loss would most likely have damage to which structure?

Accepted Answer

Cochlear hair cells

Question 18

Which of the following best explains the cause of motion sickness?

Accepted Answer

Mismatched sensory information from the eyes and vestibular system.

Question 19

Which of the following is the main function of the superior colliculus in the visual pathway?

Accepted Answer

Coordinating eye movement to focus on new objects.

Question 20

Which of the following best describes the effect of aging on the lens and near vision?

Accepted Answer

The lens stiffens, making it harder to focus on near objects (presbyopia).

Chapter 15: The Special Senses – Human Anatomy & Physiology Study Notes

Study Guide - Practice Questions