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