Which of the following occurs during the latent period of muscle contraction?
A) An action potential is generated.
B) Calcium is released from the sarcoplasmic reticulum.
C) Acetylcholine is released at the axon terminal and an action potential is generated.
D) Acetylcholine is released at the axon terminal
Ans: B) Calcium is released from the sarcoplasmic reticulum.
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The right side of the heart:
a. deals with oxygen-poor blood b. deals with oxygen-rich blood c. is the pump for systemic circulation d. both B and C above
____________________ gated channels respond to stretching or other mechanical deformation
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When a blood capillary is cut, a clot forms under which influence?
a. negative feedback. b. positive feedback. c. extrinsic control. d. both (a) and (b) above. e. none of these answers.
The stage of labor in which the fetus is expelled is
A. the first stage. B. the second stage. C. the third stage. D. the fourth stage. E. the fifth stage.