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