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GCU BIO 201 EXAM 4 2026
QUESTIONS AND ANSWERS| ACE
YOUR GRADES.
Inotrophy - correct answer -strength of heart contractions
Chronotrophy - correct answer -increase in heart rate
Atropine - correct answer -muscarinic antagonist
dilates pupils
Alpha 1 - correct answer -found in most tissues
vasoconstricts
smooth muscle cells in blood vessel
Alpha 2 - correct answer -found in GI tract
vasodilation of blood vessels
typically inhibitory
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Beta 1 - correct answer -found in heart
increase in heart rate
strength of contractions
Beta 2 - correct answer -found in lungs
triggers relaxation of smooth muscles along respiratory tract, wall
of uterus
Agonist - correct answer -stimulates receptor
Antagonist - correct answer -blocks receptor
Myelinated Type A Pain Fibers - correct answer -carry sensations
of fast pain or prickling pain
Type C Pain Fibers - correct answer -carry sensations of slow
pain or burning & aching pain
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Thermoreceptors - correct answer -conducted along the same
pathways that carry pain sensations
Mechanoreceptors - correct answer -contain mechanically
regulated ion channels whose gates open or close in response to:
-stretching
-compression
-twisting
Tactile receptors - correct answer -provide the sensations of
touch, pressure, & vibration
baroreceptors - correct answer -detect pressure changes in the
walls of blood vessels, & in portions of the digestive, reproductive,
and urinary tracts
proprioceptors - correct answer -monitor the positions of joints
and muscles
GCU BIO 201 EXAM 4 2026
QUESTIONS AND ANSWERS| ACE
YOUR GRADES.
Inotrophy - correct answer -strength of heart contractions
Chronotrophy - correct answer -increase in heart rate
Atropine - correct answer -muscarinic antagonist
dilates pupils
Alpha 1 - correct answer -found in most tissues
vasoconstricts
smooth muscle cells in blood vessel
Alpha 2 - correct answer -found in GI tract
vasodilation of blood vessels
typically inhibitory
, Page | 2
Beta 1 - correct answer -found in heart
increase in heart rate
strength of contractions
Beta 2 - correct answer -found in lungs
triggers relaxation of smooth muscles along respiratory tract, wall
of uterus
Agonist - correct answer -stimulates receptor
Antagonist - correct answer -blocks receptor
Myelinated Type A Pain Fibers - correct answer -carry sensations
of fast pain or prickling pain
Type C Pain Fibers - correct answer -carry sensations of slow
pain or burning & aching pain
, Page | 3
Thermoreceptors - correct answer -conducted along the same
pathways that carry pain sensations
Mechanoreceptors - correct answer -contain mechanically
regulated ion channels whose gates open or close in response to:
-stretching
-compression
-twisting
Tactile receptors - correct answer -provide the sensations of
touch, pressure, & vibration
baroreceptors - correct answer -detect pressure changes in the
walls of blood vessels, & in portions of the digestive, reproductive,
and urinary tracts
proprioceptors - correct answer -monitor the positions of joints
and muscles
