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