Vasodilation is associated with:
a. increased sympathetic nervous system stimulation
b. increased carbon dioxide and nitric oxide levels
c. increased oxygen levels and myogenic activity
d. decreased nitric oxide levels and increased histamine release
e. decreased carbon dioxide and myogenic activity
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Question 2) The slow pain pathway is activated by
a. stimulation of mechanical or thermal nociceptors
b. stimulation of polymodal nociceptors
c. bradykinin
d. only a and c
e. only b and c
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Question 3) Vasoconstriction is associated with:
a. decreased sympathetic nervous system stimulation
b. increased oxygen levels and myogenic activity
c. increased carbon dioxide and nitric oxide levels
d. decreased oxygen levels and myogenic activity
e. decreased endothelin and nitric oxide levels
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Question 4) Select the incorrect association:
a. chemoreceptor/oxygen concentration
b. mechanoreceptor/skeletal muscle stretch
c. nociceptor/solute concentration
d. photoreceptor/light
e. thermoreceptor/heat and cold
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Question 5) The extent of contraction of arteriolar smooth muscle depends on the cytosolic concentration of what element?
a. iron
b. phosphorus
c. potassium
d. magnesium
e. calcium
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Question 6) The smaller the receptive fields in a region,
a. the lower the density of receptors in the region
b. the lower the acuity in the region
c. the more likely of feeling two separate stimuli occurring close together on the skin
d. all of the above will be true
e. only a and b will be true
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Question 7) While measuring blood pressure with a sphygmomanometer, where is the stethoscope placed?
a. beneath the radial artery
b. above the brachial plexus
c. over the ulnar
d. over the brachial artery
e. over the radial artery
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Question 8) In somatosensory pathways, first-order neurons usually synapse with second-order neurons in the
a. dorsal root ganglia or basal nuclei
b. medulla oblongata or thalamus
c. spinal cord or cerebellum
d. dorsal root ganglia or medulla oblongata
e. spinal cord or medulla oblongata
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Question 9) The maximum pressure exerted in the arteries is when blood is ejected into them during:
a. inhalation
b. exhalation
c. exercise
d. diastole
e. systole
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Question 10) Coding of sensory information may result from
a. the intensity of the stimuli
b. the location of the stimuli
c. they stimulus modality
d. all of the above
e. none of the above
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