The Special Senses

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Question 1
Free
Multiple Choice

Olfactory glands

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A

house the sense of smell.

B

regenerate to form new olfactory epithelium.

C

react to aromatic molecules.

D

coat the olfactory epithelium with a pigmented mucus.

E

group as olfactory bulbs.

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Question 2
Free
Multiple Choice

Olfactory information is first received by which part of the brain?

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A

pons

B

cerebellum

C

thalamus

D

cerebrum

E

medulla oblongata

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Question 3
Free
Multiple Choice

Before an olfactory receptor can detect an odorant, it has to

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A

contact a basal cell.

B

bind to receptors on olfactory dendrites.

C

open ion channels.

D

respond to applied pressure.

E

be transported to the olfactory bulbs.

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Question 4
Free
Multiple Choice

Which of the following is true of olfactory discrimination?

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A

There are 6 primary smells known.

B

The number of olfactory receptors decline as we age.

C

All odorants require the same concentration to activate an olfactory receptor.

D

There are different types of olfactory receptor cells to detect each type of odorant.

E

The olfactory receptor population does not divide.

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Question 5
Free
Multiple Choice

All of the following are true of olfactory pathways except which one?

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A

They project first to the occipital lobes and then to the thalamus.

B

Neurons from the olfactory epithelium synapse in the olfactory bulb.

C

Information flows to the olfactory cortex, hypothalamus, and limbic system.

D

They reach the forebrain without first synapsing in the thalamus.

E

The limbic system-olfactory pathway connection means that there are close ties between experiences and memories with smell.

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Question 6
Multiple Choice

Some neural tissues retain stem cells and thus the capacity to divide and replace lost neurons. Which ofthese special senses can replace its damaged neural receptors?

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A
olfaction
B
hearing
C
equilibrium
D
proprioception
E
vision
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Question 7
Multiple Choice

Anormal, relaxed inhalation carries about ________ of the inhaled air to the olfactory organs.

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A
50 percent
B
8 percent
C
2 percent
D
35 percent
E
10 percent
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Question 8
Multiple Choice

Olfactory receptors send axons through the cribriform plate. They synapse on neurons in the

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A
medulla oblongata.
B
medial geniculate.
C
cerebral cortex.
D
olfactory bulb.
E
olfactory tract.
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Question 9
Multiple Choice

Olfactory organs are located in the nasal cavity inferior to the perforated bony structure known as the

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A
cribriform plate.
B
sphenoid bone.
C
sella turcica.
D
vomer.
E
zygomatic process.
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Question 10
Multiple Choice

The olfactory organ consists of the ________ and the lamina propria.

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A
gustatory cells
B
basilar membrane
C
olfactory epithelium
D
hippocampus
E
ethmoid bone
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Question 11
Multiple Choice

The olfactory receptors are highly modified

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A
epithelial cells.
B
interneurons.
C
sensory neurons.
D
motor neurons.
E
neuroglial cells.
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Question 12
Multiple Choice

Which of the following types of sensory information reaches the cerebral cortex directly?

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A
visual
B
hearing
C
equilibrium
D
olfactory
E
gustatory
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Question 13
Multiple Choice

When odorant molecules contact the dendritic processes of olfactory receptors the initial response is

Choose correct answer/s
A
an action potential.
B
activation of a kinase.
C
a generator potential.
D
a hyperpolarization potential.
E
a conversion of 11-trans retinal to 11-cis retinal.
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Question 14
Multiple Choice

During a sinus infection it is difficult to smell because

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A
basal cell division decreases.
B
olfactory glands stop producing mucus.
C
olfactory supporting cells block odorant molecules from reaching the receptors.
D
the hypothalamus stops responding to olfactory stimulation.
E
excess mucus blocks odorant molecules from reaching the receptors.
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Question 15
Multiple Choice

Damage to the insula is most likely to affect which of the following senses?

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A
olfaction
B
gustation
C
vision
D
hearing
E
equilibrium
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Question 16
Multiple Choice

Our taste buds are most receptive to which of the following types of compounds?

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A
sweet
B
salty
C
sweet and salty
D
bitter
E
umami
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Question 17
Multiple Choice

As we age

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A
taste bud sensitivity increases.
B
taste bud sensitivity doubles.
C
the number of taste buds increases.
D
the number of taste buds decreases.
E
the number of taste buds decreases but the number of olfactory receptors increases to compensate.
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Question 18
Multiple Choice

Which of the following correctly states how a gustatory receptor will be stimulated by an acidic or sourcompound?

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A
G proteins will be activated.
B
Hydrogen ions will diffuse into the receptor cell causing depolarization.
C
Sodium ions will diffuse into the receptor cell causing depolarization.
D
Second messengers will be activated.
E
Adenylate cyclase will be activated.
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Question 19
Multiple Choice

The function of gustatory receptors parallels that of

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A
photoreceptors in the eye.
B
mechanoreceptors in the ear.
C
olfactory receptors.
D
lamellar corpuscles.
E
proprioceptors.
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Question 20
Multiple Choice

Which of the following lingual papillae has the largest number of taste buds?

Choose correct answer/s
A
pharynx
B
foliate papillae
C
filiform papillae
D
fungiform papillae
E
vallate papillae
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