At an inhibitory synapse, the postsynaptic membrane experiences
a. an increase in permeability to both Na+ and K+
b. an increase in membrane potential
c. hyperpolarization
d. an influx of cations
e. all of the above
B
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What is the correct order for the layers of the GI tract wall, from innermost (next to lumen) to outermost?
A. Mucosa - submucosa - adventitia/serosa - muscularis B. Muscularis - mucosa - adventitia/serosa - submucosa C. Adventitia/serosa - mucosa - submucosa - muscularis D. Mucosa - submucosa - muscularis - adventitia/serosa E. Adventitia/serosa - muscularis - mucosa - submucosa
During the down phase of a knee extension exercise, what role does the hamstring group play?
A. agonist B. antagonist C. stabilizer D. neutralizer
Psychopathia Sexualis was authored by:
A. Richard von Krafft-Ebing. B. Henry Havelock Ellis. C. Magnus Hirschfeld. D. Sigmund Freud.
Hormones are intercellular chemical signals that
A. help coordinate growth, development and reproduction. B. are secreted into the external environment where they act. C. operate primarily by positive feedback. D. affect only non-hormone producing organs or tissues.