Question 1

Which of the following best describes the main difference between general senses and special senses?

Accepted Answer

Special senses use specialized receptor cells, while general senses use the receptive endings of sensory neurons.

Question 2

A patient presents with a loss of taste sensation on the anterior two-thirds of the tongue. Which cranial nerve is most likely affected?

Accepted Answer

Cranial Nerve VII (Facial)

Question 3

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

Accepted Answer

Cornea

Question 4

A person with myopia (nearsightedness) has difficulty seeing distant objects clearly. Which corrective lens should be used and why?

Accepted Answer

A concave lens, because it diverges light rays before they reach the eye.

Question 5

Which of the following best explains why the fovea centralis is the region of highest visual acuity?

Accepted Answer

It contains a high density of cones tightly packed together.

Question 6

Which of the following is TRUE regarding the transduction of sound in the inner ear?

Accepted Answer

Depolarization of hair cells occurs when potassium ions enter the cell.

Question 7

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

Accepted Answer

It increases the density of the macula, allowing detection of gravity and linear acceleration.

Question 8

A patient has damage to the superior oblique muscle of the eye. Which cranial nerve is most likely affected?

Accepted Answer

Cranial Nerve IV (Trochlear)

Question 9

Which of the following statements about the visual pathway is correct?

Accepted Answer

Axons from the nasal retina cross at the optic chiasma, allowing each hemisphere to process information from both eyes.

Question 10

Which of the following best explains why LASIK surgery can correct both myopia and hyperopia?

Accepted Answer

It reshapes the cornea to adjust the amount of refraction so that light is focused on the retina.

Question 11

Which of the following is a function of the tectorial membrane in the cochlea?

Accepted Answer

It bends the stereocilia of hair cells, initiating the process of sound transduction.

Question 12

Which of the following best describes the role of the ciliary body during accommodation for near vision?

Accepted Answer

It contracts, reducing tension on the suspensory ligaments and allowing the lens to become rounder.

Question 13

A patient is unable to detect rotational movements of the head. Which structure is most likely damaged?

Accepted Answer

Semicircular canals

Question 14

Which of the following is TRUE regarding the blind spot in the human eye?

Accepted Answer

It is the location where the optic nerve exits the retina and contains no photoreceptors.

Question 15

Which of the following best explains why a person with damage to the macula lutea would experience loss of central vision?

Accepted Answer

The macula lutea contains a high density of cones necessary for detailed central vision.

Question 16

Which of the following best describes the function of the lacrimal apparatus?

Accepted Answer

It produces and drains tears, lubricating and protecting the eye.

Question 17

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

Accepted Answer

Ciliary body → posterior chamber → pupil → anterior chamber → scleral venous sinus

Question 18

Which of the following best explains why the sense of taste is diminished when the sense of smell is lost?

Accepted Answer

Olfactory chemoreceptors contribute to the perception of flavor.

Question 19

Which of the following is TRUE regarding the function of the basilar membrane in the cochlea?

Accepted Answer

It supports the spiral organ and vibrates in response to sound, allowing detection of pitch and loudness.

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

Study Guide - Practice Questions