IUPUI Physiology Exam 2 Questions and
Answers Top Graded 2025-2026
Tyrosine kinase is an amplifier enzyme that phosphorylates the ____________ -
Correct Answers ✔-target cell
What alters the structure of cytoskeleton and can also activate intracellular
enzymes? -Correct Answers ✔-integrins
Nitric oxide, carbon monoxide, and hydrogen sulfide all cause ____________ -
Correct Answers ✔-vasodilation
Anterior pituitary is also known as the ____________ -Correct Answers ✔-
adenohypophysis
"All or none strength" describes ____________ -Correct Answers ✔-action
potentials
Threshold potential is at ____________ -Correct Answers ✔--55 mV
During repolarization, so much potassium moves out of the cell that is results in
____________ -Correct Answers ✔-hyperpolarization
This kind of refractory period prevents action potential of any strength from
propagating -Correct Answers ✔-absolute
Water toxicity = too much water is taken into the body and it dilutes concentration
of what ion? -Correct Answers ✔-K+
The action of an IPSP is to ____________ -Correct Answers ✔-hyperpolarize
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Clostridium botulinum causes ____________ -Correct Answers ✔-inhibition of
muscle contraction
Diffuse modulatory systems: Dopaminergic (DA) is involved in regulating what? -
Correct Answers ✔-motor control and reward pathway
Diffuse modulatory systems: Cholinergic is involved in regulating what? -Correct
Answers ✔-sleep-wake, learning, memory, and arousal
Inability to fall asleep/stay asleep -Correct Answers ✔-insomnia
Is the half life of amine hormones long or short? -Correct Answers ✔-short
In what manner are cytokines made? -Correct Answers ✔-on demand
What is the end result of a signal pathway? -Correct Answers ✔-response
IP3 in the cytosol opens up __________ channels in the endoplasmic reticulum -
Correct Answers ✔-calcium
What molecule, produced by white blood cells, stimulates asthma responses? -
Correct Answers ✔-leukotrienes
Growth hormone controls what? -Correct Answers ✔-cell division and cell growth
Rate of hormone breakdown is determined by the hormone's ____________ -
Correct Answers ✔-half life
What are the three main classes of hormones? -Correct Answers ✔-protein
hormones, amine hormones, and steroid hormones
These hormones are all produced and modified from cholesterol -Correct Answers
✔-steroid hormones
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