Threshold stimulus is the
A) minimum strength of stimulation required to contract a muscle fiber.
B) maximum stimulus required to release acetylcholine.
C) minimum stimulus required to produce ATP.
D) maximum stimulus required to contract a muscle.
A
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Compartments within the testes are (the)
A) straight tubules. B) lobes. C) lobules. D) seminiferous tubules. E) None of the answers are correct.
The vessel that returns blood from the abdomen and legs to the heart is the ________ vena cava.
Fill in the blank(s) with the appropriate word(s).
As the fetus develops, the mother's glomerular filtration rate
A. increases by about 10%. B. decreases by about 10%. C. increases by about 40%. D. decreases by about 40%.
Long-term potentiation
a. is to increased responsiveness to mild stimuli following a strong or noxious stimulus b. is an increase in strength of existing synaptic connections in pathways involved in initial storage of declarative information following brief periods of stimulation c. involves a retrograde chemical messenger from the postsynaptic neuron influencing the presynaptic neuron d. exhibits characteristics a and b e. exhibits characteristics b and c