Biology

Biology, 07.07.2019 04:00, bankskry

What indicates to a muscle that it should contract

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Medicine, 20.07.2019 02:30, jennyferluna0216

The coupling of muscle excitation & muscle contraction involves the 2nd physiologic event. this process is best described by which of the following? a) an action potential propagates along the motor axon innervating the muscle fiber. b) the synaptic end bulb releases a neurotransmitter, causing the muscle to contract. c) ca2+ channels, stimulated by depolarizing t-tubules, open and release ca2+ ions to the sarcoplasm. d) crossbridge cycling & muscle contraction.

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Biology, 17.09.2019 11:30, daniellekennedy05

Why is it important for the release of acetylcholine to stop and for enzymes to destroy any remaining acetylcholine in the neuromuscular junction? a. calcium would be pumped back into storage and cross-bridges would stop farming. b. the strength of the muscle would increase. c. the muscle would not be able to contract. d. the muscle would continue to contract uncontrollably.

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Biology, 27.09.2019 01:30, mikewalton566

If the intercalated discs of cardiac muscle lost their a) the heart muscle would not be able to contract in unison. b) the heart muscle would contract at random sometimes and in unison at other times. c) the heart muscle would increase blood volume in the vessels. d) the heart muscle would contract in unison.

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Health, 17.10.2019 03:30, bludragonfly33

Select all that apply. an example of a smooth muscle is: a) muscle that the heart contract b) muscle that supports blood vessels c) muscle that can be controlled d) muscle in your arm, like the bicep

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