In the case of most neurons, the arrival of a nerve impulse at the terminal bouton immediately triggers
A) long-lived effects at the synaptic membrane.
B) a change in the permeability of the postsynaptic plasmalemma.
C) release of ACh at the presynaptic membrane.
D) an action potential.
E) generation of an action potential in the axon.
C) release of ACh at the presynaptic membrane.
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One reason that pregnant women's metabolic rates change is that the placenta secretes
A. human chorionic gonadotropin, which stimulates metabolism of glucose and raises metabolic rate. B. human chorionic thyrotropin, which stimulates the thyroid gland and raises metabolic rate. C. human placental lactogen, which stimulates glycolysis and raises metabolic rate. D. human chorionic somatomammotropin, which inhibits fatty acid metabolism and lowers metabolic rate. E. prolactin, which lowers metabolic rate so that nutrients can be stored in milk.
The lobes of the thymus are separated by connective tissue into
A) medullae. B) lobules. C) cortices. D) septa. E) None of the answers are correct.
Differentiate among atmospheric pressure, intrapulmonary pressure, and intrapleural pressure
What will be an ideal response?
If maximum tension indicates that the thick and thin filaments are set at optimal overlap to produce a maximum number of crossbridges, further stretching of the muscle will...
What will be an ideal response?