Deck 26: Special Senses: Olfaction and Taste

Question 1

Taste receptor cells are found in structures called _.

A) taste pores
B) taste buds
C) epithelial layers
D) papilllae

Answer 1

B

Question 2

Olfactory receptor cells differ from all other receptors for special senses in that they .

A) detect chemicals
B) are neurons
C) have hairs
D) are of epithelial origin

Answer 2

B

Question 3

Salty taste seems to be due to _.

A) H+ ions
B) Na+ ions
C) sugars and lead salts
D) the amino acid glutamate

Answer 3

B

Question 4

Tastes associated with caffeine, quinine, or aspirin are detected primarily by taste receptors.

A) sour
B) umami
C) bitter
D) salty
E) sweet

Question 5

Of all the factors that influence our sense of taste, this is the most important one.

A) smell
B) temperature
C) texture

Question 6

Airborne chemicals are most likely to stimulate .

A) taste receptors for bitter
B) olfactory receptors, taste receptors for umami, and taste receptors for bitter
C) olfactory receptors
D) taste receptors for umami

Question 7

Taste receptor cells are also called .

A) gustatory cells
B) papillae
C) taste hairs
D) taste buds

Question 8

Because of anatomical differences in the olfactory system, the sense of smell may be more important to this animal than it is to humans.

A) fish
B) predatory bird
C) sheep

Question 9

The axons of olfactory receptor cells constitute .

A) CN I
B) CN II
C) CN III
D) CN IV

Question 10

Acids primarily activate receptors that respond to tastes.

A) sour
B) salty
C) sweet
D) bitter
E) umami

Question 11

Nerve fibers from the olfactory bulb project directly to .

A) the olfactory cortex (uncus)
B) the thalamus
C) the basal nuclei (basal ganglia)
D) the hypothalamus

Question 12

Which structures form a V-shape on the posterior portion of the tongue?

A) fungiform papillae
B) foliate papillae
C) vallate papillae

Question 13

Adaptation _.

A) is a property of all sensory receptors
B) occurs when the stimulus is still present, but can no longer be detected
C) cannot occur for the chemical senses
D) occurs only for the sense of smell

Question 14

The sensation of taste is carried on axons of the following cranial nerve(s): .

A) V
B) III, IV, and VI
C) I
D) VII, IX, and X

Question 15

Sugar crystals placed on a dry tongue _ .

A) activate sweet receptors immediately
B) do not activate any taste receptors
C) activate receptors located only in the middle of the tongue
D) activate sweet and umami receptors immediately

Question 16

Taste receptors are found primarily on the tongue, but may also be found _ _.

A) in the soft palate and pharynx
B) throughout the nasal passages
C) in the olfactory epithelium
D) in the esophagus

Question 17

The portion of the bipolar olfactory receptor cell that actually detects odors is the .

A) proximal axon
B) dendrite
C) axon terminal
D) olfactory cilium

Question 18

Both olfactory receptor cells and taste receptor cells are .

A) capable of detecting more than one special sensation
B) located within specialized structures called papillae
C) surrounded by epithelial support cells
D) sensitive to chemicals in the air

Question 19

It is easier to taste and identify a particular substance if .

A) the substance is cold
B) the nose is plugged
C) the substance has a distinct texture
D) the substance has a distinct texture, the nose is plugged, and the substance is cold

Question 20

The olfactory epithelium .

A) lines the nasal cavity
B) lies superior to the cribriform plate
C) is found in the roof of the nasal cavity
D) surrounds the olfactory bulb

Question 21

A substance cannot dissolve in water or the mucous that coats the olfactory epithelium. What is true about this substance?

A) We cannot detect it using the chemical senses.
B) We can detect it by taste but not smell.
C) We can detect it by smell but not taste.

Question 22

are precursor cells that give rise to new gustatory epithelial cells.

A) Basal epithelial cells
B) Sensory neurons
C) Olfactory stem cells

Question 23

Umami taste sensation is elicited by .

A) salt
B) sugars
C) amino acids glutamate and aspartate
D) acids

Question 24

Adaptation of the olfactory epithelium _ .

A) is difficult to detect
B) occurs readily in the presence of odorants
C) rarely occurs
D) occurs only when the surrounding air is cold