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