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Human Physiology Lab 08 To 11 Review
Test Description: To practice for lab quiz
Instructions: Answer all questions to get your test result.
1) the highest concentration of taste buds is found in the ___________, while the _______ lack taste buds
A
filiform papillae, fungiform papillae
B
fungiform papillae, vallate papillae
C
filiform papillae, vallate papillae
D
vallate papillae, filiform papillae
2) the taste cells for the sensations of salty and sour differ from the others in that
A
they use G-protein signaling systems
B
there are about 10 times as many receptors for them
C
they have internal rather than cell surface receptors
D
they lack receptors- the ions lead directly to depolarization
3) cells that sense ___________ and ___________ use a G protein second messenger to close Potassium channels, triggering depolarization
A
sweet and sour
B
salty and sour
C
sweet and umami
D
bitter and umami
4) each 'taste cell' detects _______ type of 'taste'; within an individual taste bud
A
either of its cognate pair (salty/sour, sweet/umami, bitter); there are paired taste cells
B
just one; there can be different types of taste cells
C
all five; there are membranes allowing the passage of only certain taste molecules
D
just one; there is only one type of taste cell
5) if you were able to taste each of the 5 samples on all upper surfaces of the tongue, this would ___________ the hypothesis that taste receptors are localized
A
prove
B
support
C
disprove
D
have no effect on
6) in the eye, light is refracted to form an inverted image on the retina by the______
A
all of them
B
vitreous humor
C
lens
D
cornea
7) in the retina, photoreceptors are densest at the _____, and absent from the _______
A
choroid, lucidum
B
optic apex, cillary body
C
optic disc, fovea centralis
D
fovea centralis, optic disc
8) visual acuity is defined as
A
the lack of cylindrical aberration in the lens of the eye
B
the minimum distance between two points
C
the ability to distinguish two distinct points
D
the ability to read letters from a chart
9) the 'strength' of a lens with a focal distance of 25 cm would be
A
4 diopters
B
2.5 triopters
C
15/20
D
-4 diopters
10) if the focal point is in front of the retina, the condition is called ___________; to correct this by lengthening the focal distance, use a ________
A
myopia, concave lens
B
hyperopia, convex lens
C
emmetropia, scalpel or laser
D
Presbyopia, confocal lens
11) in Presbyopia, the eye loses its ability to __________, or adjust focus for near objects
A
adapt
B
fluctuate
C
compensate
D
accomodate
12) in the retina, cells referred to as ________ are less sensitive to light, but detect color
A
bipolar cells
B
rods
C
cones
D
photorhodopsin
13) why is red/ green color blindness far more common in males?
A
the gene for M cones is located on the Y chromosome
B
the gene for the S cones is located on autosomal chromosomes
C
they are aesthetically challenged
D
the genes for M and L cones are located on the X chromosome
14) the structure which divides the middle ear from the outer ear is the
A
tympanic membrane
B
internal acoustic meatus
C
auditory canal/ tube
D
oval window
15) the middle ear contains the
A
acoustic meatus
B
ossicles
C
tympanic membrane
D
cochlea and vestibular apparatus
16) Rinne's test compares
A
bone conduction with nerve conduction
B
auditory signals with visual signals
C
bone conduction with air conduction
D
endolymph motion with perilymph motion
17) sound waves are transduced to nerve impulses in
A
the organ of corti
B
the saccule
C
the semicircular canal
D
the ampula
18) Rinne's and Weber's tests are used as part of a process to distinguish between
A
unilateral vs. bilateral deafness
B
auditory hallucinations vs. neural hallucinations
C
conduction deafness vs. sensory deafness
D
intrinsic vs. extrinsic deafness
19) the ________ organs, utricle and saccule are used to detect
A
tripanar, vibration
B
umbricle, deviation from a setpoint
C
otolith, acceleration
D
vessicular, rotation
20) of the semicircular canals, the lateral canals are used to detect rotation...
A
forward and back (protraction/ retraction), uh, like 'sand dance'. ? meh perpendicular to head slide...
B
forward and backward (pitch), as in nodding the head 'yes'
C
side to side around the axis (yaw), as in shaking the head 'no'
D
tilting to the left or right (roll), as in looking quizzical
*select an answer for all questions
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