$$f_{AP} \propto A_{stimulus} \times D_{stimulus}$$

Question 1

Which of the following statements best describes the pathway of olfactory information from the nose to the brain?

Accepted Answer

Olfactory information travels directly from the olfactory tract to the olfactory cortex, bypassing the thalamus.

Question 2

Which type of lingual papillae does NOT contain taste buds?

Accepted Answer

Filiform papillae

Question 3

What is the primary molecule responsible for activating sour taste receptors?

Accepted Answer

H+

Question 4

Which structure of the eye is responsible for focusing light onto the retina?

Accepted Answer

Lens

Question 5

What is the function of the lacrimal apparatus?

Accepted Answer

It produces, distributes, and removes tears.

Question 6

Which photoreceptor is responsible for color vision and is clustered in the fovea centralis?

Accepted Answer

Cones

Question 7

Which layer of the eye provides a route for blood vessels and lymphatics and controls the shape of the lens?

Accepted Answer

Vascular layer (uvea)

Question 8

What is the correct formula for calculating focal distance in the eye, given the lens and focal point?

Accepted Answer

$$d_f = |x_{lens} - x_{focal}|$$

Question 9

Which of the following best explains why dogs have a much better sense of smell than humans?

Accepted Answer

Dogs have 72 times more olfactory receptor surface area than humans.

Question 10

Which taste is primarily activated by amino acids, especially glutamate, and is found in meats and parmesan cheese?

Accepted Answer

Umami

Question 11

Which cells in the taste bud extend microvilli (taste hairs) through the taste pore and survive about 10 days before replacement?

Accepted Answer

Gustatory epithelial cells

Question 12

Which part of the eye absorbs light that passes through the neural layer?

Accepted Answer

Pigmented layer of the retina

Question 13

What is the main function of rods in the retina?

Accepted Answer

Highly sensitive to light and do not discriminate colors

Question 14

Which of the following is TRUE regarding the olfactory receptor cells?

Accepted Answer

They are replaced frequently, but the total number declines with age.

Question 15

Which of the following best describes the role of the pupil in the eye?

Accepted Answer

It is the central opening of the iris that allows light into the eyeball.

Question 16

Which of the following is a correct sequence for the olfactory pathway to the cerebrum?

Accepted Answer

Olfactory epithelium → Olfactory nerve fibers → Olfactory bulb → Olfactory tract → Central nervous system

Question 17

Which of the following is the correct description of the function of the sclera?

Accepted Answer

It supports and protects the eye and serves as an attachment site for extrinsic eye muscles.

Question 18

Which of the following is the correct formula for the frequency of action potentials in response to stimulus duration and amplitude?

Accepted Answer

$$f_{AP} \propto A_{stimulus} 	imes D_{stimulus}$$

Question 19

Which of the following is TRUE about the visual axis?

Accepted Answer

It is the line from an object to the fovea centralis.

Chapter 17: The Special Senses – Olfaction, Gustation, and Vision

Study Guide - Practice Questions