Psychology 103 - Physiological Psychology » Spring 2022 » Chapter 7 Quiz 2
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Question #1
The perception of both pain and changes in skin temperature are largely mediated by
A.
temperoceptors.
B.
Pacinian corpuscles.
C.
nociceptors.
D.
free nerve endings.
E.
red corpuscles.
Question #2
The Pacinian corpuscle is
A.
the largest cutaneous receptor.
B.
none of these
C.
all of these
D.
the most deeply positioned cutaneous receptor.
E.
fast adapting.
Question #3
The area of the body that is innervated by the left and right dorsal roots of a given segment of the spinal cord is one
A.
none of these
B.
Ruffini ending.
C.
stereognosis.
D.
region of glabrous skin.
E.
dermatome.
Question #4
The destruction of a single dorsal root typically produces little somatosensory loss because
A.
there are few cutaneous receptors in the back.
B.
the dorsal roots soon degenerate.
C.
D.
there is considerable overlap of projections from adjacent dermatomes.
E.
the somatosensory system has a motor component.
F.
the dorsal roots accurately regenerate.
Question #5
The dorsal-column medial-lemniscus system and the anterolateral system both carry sensory information from the
A.
nose.
B.
mouth.
C.
skin.
D.
ears.
E.
eyes.
Question #6
The dorsal-column medial-lemniscus system is particularly responsive to
A.
touch and proprioception.
B.
tickle and temperature.
C.
motor output.
D.
sound and movement.
E.
pain and temperature.
Question #7
The longest neuron in the human body
A.
is a finger neuron.
B.
has its cell body in the spinal cord.
C.
is a somatosensory neuron with one end in a toe and the other in the dorsal column nuclei.
D.
is part of the anterolateral system.
E.
all of these
Question #8
Most of the neurons of the anterolateral system decussate in the
A.
corpus callosum.
B.
spinal cord.
C.
lower brain stem.
D.
midbrain.
E.
medulla.
Question #9
The anterolateral system comprises the
A.
all of these
B.
spinoreticular tract.
C.
spinothalamic tract.
D.
spinotectal tract.
Question #10
The ventral posterior nuclei of the thalamus receive direct input from the
A.
spinoreticular tract.
B.
spinotectal tract.
C.
all of these
D.
dorsal-column medial-lemniscus system.
Question #11
Primary somatosensory cortex is in the
A.
postcentral gyrus.
B.
frontal lobe.
C.
occipital lobe.
D.
precentral gyrus.
Question #12
Much of SII is
A.
all of these
B.
in the lateral fissure.
C.
adjacent to SI.
D.
in the parietal cortex.
Question #13
Some of the primary somatosensory cortex is in the
A.
longitudinal fissure.
B.
lateral fissure.
C.
all of these
D.
central fissure.
Question #14
The inability to identify objects by touch is
A.
astereognosia.
B.
anosognosia.
C.
apraxia.
D.
asomatognosia.
E.
stereognosis.
Question #15
Hemispherectomized patients feel
A.
none of these
B.
no pain.
C.
no pain from the ipsilateral side of the body.
D.
pain from both sides of the body.
E.
no pain from the contralateral side of the body.
Question #16
Evidence for the existence of a descending pain-control circuit came from the finding that
A.
all of these
B.
some opiates are endogenous.
C.
the PAG contains opiate receptors.
D.
none of these
E.
stimulation of the PAG produces analgesia.
Question #17
The descending PAG-raphé-dorsal-column circuit has been hypothesized to mediate
A.
touch.
B.
some types of pain.
C.
stereognosis.
D.
audition.
E.
some types of analgesia.
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