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