Question 1

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

Accepted Answer

Conversion of environmental stimuli such as light, chemicals, or sound into electrical signals by sensory neurons.

Question 2

A patient presents with an inability to identify odors, but can still detect them. Which brain region is most likely affected?

Accepted Answer

Primary olfactory cortex

Question 3

During olfactory transduction, which molecule is produced by adenylate cyclase and is responsible for opening ion channels?

Accepted Answer

cAMP

Question 4

Which cranial nerves carry taste stimuli from the tongue into the CNS?

Accepted Answer

Facial, glossopharyngeal, and vagus nerves

Question 5

A substance must first dissolve in which fluid before it can be detected as a gustatory stimulus?

Accepted Answer

Saliva

Question 6

Which of the following is NOT a function of the pigment found in the choroid of the eye?

Accepted Answer

Focusing light onto the retina

Question 7

The lens changes shape to focus on near objects in a process called accommodation. Which equation best describes the relationship between focal length ($$f$$), lens curvature ($$C$$), and refractive power ($$P$$)?

Accepted Answer

$$P = \frac{1}{f}$$

Question 8

A patient is diagnosed with hyperopia. Which of the following best describes this condition and its correction?

Accepted Answer

Light is focused behind the retina; corrected with convex lenses.

Question 9

Which photoreceptor pigment is composed of opsin and retinal, and is responsible for vision in low-light conditions?

Accepted Answer

Rhodopsin

Question 10

In the presence of light, what happens to the photoreceptor cell membrane potential and neurotransmitter release?

Accepted Answer

The cell hyperpolarizes and stops releasing glutamate.

Question 11

Which structure is responsible for the conversion of sound wave energy into electrical impulses in the inner ear?

Accepted Answer

Spiral organ (organ of Corti)

Question 12

A patient with sensorineural hearing loss most likely has damage to which of the following?

Accepted Answer

Hair cells in the cochlea

Question 13

Which equation best represents the relationship between sound wave frequency ($$f$$), wavelength ($$\lambda$$), and speed of sound ($$v$$)?

Accepted Answer

$$v = f 	imes \lambda$$

Question 14

Which fluid in the inner ear is responsible for depolarizing hair cells during sound transduction?

Accepted Answer

Endolymph

Question 15

Which of the following best describes static equilibrium?

Accepted Answer

Maintenance of head position relative to gravity when the body is not moving.

Question 16

The macula in the vestibule contains hair cells embedded in a gelatinous mass with calcium carbonate crystals. What is the function of these crystals (otoliths)?

Accepted Answer

Increase membrane density to enhance detection of head position and movement.

Question 17

Which event occurs when the basilar membrane moves up toward the tectorial membrane in the cochlea?

Accepted Answer

Stereocilia bend toward the tallest stereocilium, opening potassium ion channels and depolarizing the hair cell.

Question 18

Which pathway correctly describes the transmission of visual information from the retina to the brain?

Accepted Answer

Retina → optic nerve → optic chiasm → lateral geniculate nucleus (thalamus) → primary visual cortex (occipital lobe)

Question 19

Which of the following is a real-world example of conduction hearing loss?

Accepted Answer

A buildup of cerumen (ear wax) blocking the external auditory canal.

Anatomy & Physiology: Special Senses Study Guide (Chapter 15)

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드