An IPSP is
a. produced by increased permeability to Na+ and K+
b. produced by increased permeability to K+ or Cl-
c. a hyperpolarization of the presynaptic cell
d. a decrease in the postsynaptic membrane potential
e. an decrease in the presynaptic membrane potential
B
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Which of the following glands have a compound rather than a simple structure?
A) salivary glands B) sebaceous glands C) mucous glands D) sweat glands E) gastric glands
The serous membrane covering the surface of the lungs is called the ________
A) mediastinum B) visceral pleura C) parietal pleura D) main (primary) bronchi E) pleurisy
The areas near the Z lines that contain only thin filaments are ________
A) None of the listed responses is correct. B) A bands C) zones of overlap D) I bands
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A. one-way valves in the veins. B. precapillary sphincters. C. skeletal muscle contraction. D. elastic valves. E. the tunica intima.