Question 1

Which of the following best distinguishes special senses from general senses?

Accepted Answer

Special senses have specialized organs and are relayed to the brain by cranial nerves, while general senses are detected by receptors distributed throughout the body.

Question 2

Which receptor modality is responsible for detecting changes in blood pH and the presence of odorants?

Accepted Answer

Chemoreceptors

Question 3

A patient presents with a loss of the ability to detect flavors except for sweet, salty, sour, bitter, and umami. Which sense is most likely impaired?

Accepted Answer

Olfaction

Question 4

Which structure contains the main sensory neurons for smell and is located on the roof of the nasal cavity?

Accepted Answer

Olfactory membrane

Question 5

Which of the following best describes the function of the ciliary body in the eye?

Accepted Answer

It controls the size of the lens for focusing.

Question 6

A patient with myopia has difficulty seeing distant objects clearly. Which of the following best explains the cause?

Accepted Answer

The lens is too thick or the eye is too long.

Question 7

Which of the following is the correct pathway for light waves to reach the brain for visual processing?

Accepted Answer

Cornea $$\rightarrow$$ pupil $$\rightarrow$$ lens $$\rightarrow$$ vitreous humor $$\rightarrow$$ retina $$\rightarrow$$ optic nerve

Question 8

Which type of photoreceptor is responsible for high-resolution color vision and is concentrated in the macula lutea?

Accepted Answer

Cones

Question 9

A person with red-green colorblindness most likely has a defect in which of the following?

Accepted Answer

Green and/or red cones

Question 10

Which fluid fills the posterior cavity of the eye and helps maintain its shape?

Accepted Answer

Vitreous humor

Question 11

Which structure in the ear is responsible for detecting different sound frequencies?

Accepted Answer

Cochlea hair cells

Question 12

A patient experiences dizziness and loss of balance after an inner ear infection. Which structures are most likely affected?

Accepted Answer

Semicircular canals and vestibule

Question 13

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

Accepted Answer

Absorbing excess light

Question 14

Which of the following best explains why blocking your nose impairs your ability to taste flavors?

Accepted Answer

Olfactory receptors are essential for detecting the specific flavors beyond the five basic tastes.

Question 15

Which of the following is a mechanoreceptor?

Accepted Answer

Hair cell in the cochlea

Question 16

Which of the following is true regarding the five basic tastes?

Accepted Answer

Taste buds can detect sweet, salty, sour, bitter, and umami.

Question 17

Which of the following best describes the role of the optic disc?

Accepted Answer

It is the blind spot where no photoreceptors exist.

Question 18

Which of the following is the correct sequence for the hearing pathway?

Accepted Answer

Sound waves $$\rightarrow$$ tympanic membrane $$\rightarrow$$ malleus $$\rightarrow$$ incus $$\rightarrow$$ stapes $$\rightarrow$$ oval window $$\rightarrow$$ cochlea hair cells $$\rightarrow$$ CNVIII $$\rightarrow$$ temporal lobe

Question 19

Which of the following is required for the sense of equilibrium?

Accepted Answer

Semicircular canals and vestibule

Question 20

A patient with glaucoma is experiencing vision loss due to increased intraocular pressure. Which fluid is most likely accumulating?

Accepted Answer

Aqueous humor

Chapter 12: The Special Senses – Medical Terminology Study Guide

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