PHYSIOLOGY II EXAM 1 PRACTICE TEST
In response to a sustained stimulus, a neuron will typically show a decreased firing rate over time.
a. true
b. false
a. true
In response to a sustained stimulus, a neuron will typically show an increased firing rate over time.
a. true
b. false
b...
In response to a sustained stimulus, a neuron will typically show a decreased
firing rate over time.
a. true
b. false
a. true
In response to a sustained stimulus, a neuron will typically show an increased
firing rate over time.
a. true
b. false
b. false
Which spinal joint mechanoreceptor has a low threshold, slow adapting and has
tonic effects on lower motor neuron pools?
a. type I
b. type II
c. type III
d. type IV
a. type I
Which spinal joint mechanoreceptor is found in the outer layers of joint capsule,
dynamic-fire with movement, and fires at a degree proportional to joint movement
or traction?
a. type I
b. type II
c. type III
d. type IV
a. type I
Which spinal joint mechanoreceptor has a low threshold, rapidly adapting and
has phasic effects on lower motor neuron pools?
a. type I
b. type II
c. type III
d. type IV
b. type II
Which spinal joint mechanoreceptor is found in the deeper layers of joint capsule,
functions in joint movement monitoring, and is completely inactive in
immobilized joints?
a. type I
,b. type II
c. type III
d. type IV
b. type II
Which spinal joint mechanoreceptor has a very high threshold, slow adapting and
has tonic type of firing (fires as long as it is activated)?
a. type I
b. type II
c. type III
d. type IV
c. type III
Which spinal joint mechanoreceptor is the joint version of Golgi tendon organ
(senses tension in the joint)?
a. type I
b. type II
c. type III
d. type IV
c. type III
Which spinal joint mechanoreceptor is a nociceptor?
a. type I
b. type II
c. type III
d. type IV
d. type IV
Which spinal joint mechanoreceptor has a very high threshold, completely
inactive in physiologic normal joint, and activates with joint narrowing, increased
capsule pressure, and chemical irritation?
a. type I
b. type II
c. type III
d. type IV
d. type IV
Which tactile receptor is slowly adapting and has a relatively small receptive
field?
a. Ruffini ending
b. Meisser's corpuscle
c. Pacinian corpuscle
d. Merkel's disc
d. Merkel's disc
Which tactile receptor is slowly adapting and has a relatively large receptive
field?
,a. Ruffini ending
b. Meisser's corpuscle
c. Pacinian corpuscle
d. Merkel's disc
a. Ruffini ending
Which tactile receptor is fast adapting and has a relatively small receptive field?
a. Ruffini ending
b. Meisser's corpuscle
c. Pacinian corpuscle
d. Merkel's disc
b. Meisser's corpuscle
Which tactile receptor is fast adapting and has a relatively large receptive field?
a. Ruffini ending
b. Meisser's corpuscle
c. Pacinian corpuscle
d. Merkel's disc
c. Pacinian corpuscle
If a portion of the skin is cooled to 0 degrees centigrade, what receptors would be
most active?
a. cold receptors
b. warmth receptors
c. nociceptors
d. hot receptors
c. nociceptors
If a portion of the skin is cooled to 10 degrees centigrade, what receptors would
be most active?
a. cold receptors
b. warmth receptors
c. nociceptors
d. hot receptors
a. cold receptors
If a portion of the skin is warmed to 50 degrees centigrade, what receptors would
be most active?
a. cold receptors
b. warmth receptors
c. nociceptors
d. hot receptors
b. warmth receptors
If a portion of the skin is warmed to 60 degrees centigrade, what receptors would
be most active?
, a. cold receptors
b. warmth receptors
c. nociceptors
d. hot receptors
c. nociceptors
In the gating theory of pain, what stimulates the inhibitory interneurons in the
spinal cord, effectively closing the gate, decreasing nociceptive transmission?
a. C fibers (type IV)
b A delta fibers (type III)
c. A alpha fibers (type I)
d. all of the above
c. A alpha fibers (type I)
In the gating theory of pain, what stimulates the inhibitory interneurons in the
spinal cord, effectively closing the gate, decreasing nociceptive transmission?
a. C fibers (type IV)
b. A beta fibers (type II)
c. A delta fibers (type III)
d. all of the above
b. A beta fibers (type II)
In the gating theory of pain, what inhibits the inhibitory interneurons in the spinal
cord, effectively opening the gate, increasing nociceptive transmission?
a. C fibers (type IV)
b A delta fibers (type III)
c. A alpha fibers (type I)
d. all of the above
a. C fibers (type IV)
Most vibratory signals are transmitted to the cortex via what pathway?
a. dorsal column-medial lemniscal
b. anterolateral (spinothalamic)
c. spinocerebellar
d. spinotectal
a. dorsal column-medial lemniscal
Most proprioception signals are transmitted to the cortex via what pathway?
a. dorsal column-medial lemniscal
b. anterolateral (spinothalamic)
c. spinocerebellar
d. spinotectal
a. dorsal column-medial lemniscal
Most pain signals are transmitted to the cortex via what pathway?
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