Chemical Senses
Sensory Systems pg. 69-77
- 1.
What system(s) does taste sensation interact with?
- A.
Olfactory
- B.
Tactile
- C.
Auditory
- D.
All of the above
- E.
2 of the above
Correct Answer
E. 2 of the aboveExplanation
olfactory (smell of food) and tactile (texture/feel of food)Rate this question:
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- 2.
Taste buds are comparable to the cones of retina because they are senstiive to only one type of stimuli
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
tase buds are comparable to cones because the are MOST SENSTIIVE TO ONE TYPE OF STIMULI BUT CAN RESOND TO SOME DEGREE TO ALL STIMULIRate this question:
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- 3.
Which taste thresholds are the highest and lowest?
- A.
Sweet; bitter
- B.
Bitter; sweet
- C.
Sour; salty
- D.
Salty; sour
Correct Answer
A. Sweet; bitterExplanation
think about the evolutionary significance of being most sensitive to bitter foodsRate this question:
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- 4.
How many taste buds are in the oral cavity?
- A.
1000
- B.
15,000
- C.
1,000,000
- D.
5000
Correct Answer
D. 5000 -
- 5.
There are over 1000 neuroepithelial cells that make up 1 taste bud
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
~ 100 neuroepithelial cells in 1 taste budRate this question:
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- 6.
Where are membrane receptors of taste buds located?
- A.
Afferent fiber
- B.
Basal cell
- C.
Synapse
- D.
Microvilli
Correct Answer
D. Microvilli -
- 7.
What type of ion channel is responsible for depolarization of taste receptor cell?
- A.
Potassium
- B.
Chloride
- C.
Sodium
- D.
Hydrogen
Correct Answer
C. Sodium -
- 8.
The primary afferent fiber for taste is what type of peripheral nerve?
- A.
Group I
- B.
Group II
- C.
Group III
- D.
Group IV
Correct Answer
C. Group IIIExplanation
Type III = small, unmyelinated with cell body in cranial nerve ganglionRate this question:
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- 9.
Tastes buds are replaced every ___ days via the _____ cells.
- A.
120 days; epithelial
- B.
10 days; basal cells
- C.
20 days; basal cells
- D.
90 days; afferent fiber
Correct Answer
B. 10 days; basal cells -
- 10.
The only ion channel that is utlized in the sour receptor signal transduction is sodium channels
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
Hydrogen can stimulate both sodium channels at leaky potassium channelsRate this question:
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- 11.
For this test, you have to know about bitter and sweet signal transduction
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
just focus on salty and sour (see pg. 71)Rate this question:
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- 12.
The anterior 2/3 of the tongue sends info via:
- A.
Facial (VII)
- B.
Glossopharyngeal (IX)
- C.
Vagus (X)
- D.
All of the above
Correct Answer
A. Facial (VII) -
- 13.
The posterior 1/3 of the tongue sends info via:
- A.
Facial (VII)
- B.
Glossopharyngeal (IX)
- C.
Vagus (X)
- D.
All of the above
- E.
2 of the above
Correct Answer
E. 2 of the aboveExplanation
Glossopharyngeal AND VagusRate this question:
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- 14.
Select the correct match for cranial nerve and cell body location
- A.
Facial; Geniculate Ganglion
- B.
Glossopharyngeal; Petrosal Ganglion
- C.
Vagus; Nodose Ganlion
- D.
All of the above
- E.
2 of the above
Correct Answer
D. All of the above -
- 15.
Where does all the information from the tongue get sent to first?
- A.
VPM of thalamus
- B.
Solitary Nucleus
- C.
Parabrachial Nucleus
Correct Answer
B. Solitary Nucleus -
- 16.
Odors are categorized in a similar way to tastes
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
there are variable amounts of receptors for different tastes depending on the indivual and the individual's personal smell-experience; there is an increase in receptors for common odors that the individual experiencesRate this question:
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- 17.
The sensation of smell is most analogous to what other system?
- A.
Tactile & proprioception
- B.
Immune system
- C.
Respiratory system
- D.
Visual system
Correct Answer
B. Immune systemExplanation
like the immune system, the sensation of smell will be determined based on an individuals personal interaction with their environmentRate this question:
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- 18.
The olfactory epiehtlium is the receptor and also the nerve fiber cell body
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
this is a unique feature of the olfactory system: the same cell is both the receptor and the primary neuron that can produce an AP; most other systems have the receptor cell transmit membrane potential changes to a primary neuronRate this question:
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- 19.
The olfactory transduction is a rapid process
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
olfactory transduciton occurs via a second messenger system and therefore takes longer to depolarize
(i like to think of times when it takes a while for you to sense the smell of something)Rate this question:
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- 20.
What time of peripheral nerve fiber is involved in transductio in olfactory system?
- A.
Group I
- B.
Group II
- C.
Group III
- D.
Group IV
Correct Answer
D. Group IVExplanation
Group IV = small, unmyelinated fiber (therefore slow AP conduction)Rate this question:
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- 21.
What type of cells do the olfactory epithelium synapse with?
- A.
Mitral Cells
- B.
Cribiform Plate Cells
- C.
Cells of Olfactory Cortex
Correct Answer
A. Mitral CellsExplanation
olfactory cells that respond to the SAME type of stimulus will synapse on the SAME mitral cell and will go to the SAME cell in olfactory cortexRate this question:
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- 22.
The olfactory system is unique because it sends sensory information to the thalamus before the cortex
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
unique because it sends info to cortex BEFORE thalamus (usually the opposite is the case in sensory systems)Rate this question:
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- 23.
The olfactory system is unique because:
- A.
The olfactory epithelium are neurons with action potentials
- B.
Olfactory info goes to olfactory cortex before the thalamus
- C.
It involves a 2 cell sensory relay system, whereas other systems require 3 cells
- D.
All of the above
- E.
2 of the above
Correct Answer
D. All of the above -
- 24.
The olfactory cortex is located on:
- A.
Frontal lobe
- B.
Parahippocampal gyrus
- C.
Brodman area 28
- D.
Occipital lobe
- E.
More than one of the answers above
Correct Answer
E. More than one of the answers aboveExplanation
olfactory cortex located on parahippocampal gyrus which is Brodmann area 28Rate this question:
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- 25.
What area receives and processes information about the perception of smell?
- A.
Hypothalamus
- B.
Parahippocampal gyrus
- C.
Medial dorsal nucleus of thalamus
- D.
Septal areas
Correct Answer
B. Parahippocampal gyrusExplanation
olfactory informat goes to ALL of the above areas, but the PERCEPTION OF SMELL only occurs in the parahippocampal gyrusRate this question:
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Jan 24, 2013Quiz Edited by
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Apr 24, 2011Quiz Created by
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