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Author Question: Myosin cross bridges attach to actin strands, bend, detach, and then attach lower. These actions ... (Read 93 times)

Frost2351

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on: Jun 22, 2018
Myosin cross bridges attach to actin strands, bend, detach, and then attach lower. These actions result in the __________ of the muscle fibers.
 
  a. shortening
  b. lengthening
  c. activating
  d. stretching

Question 2

Depolarization of the muscle fiber opens voltage-gated ______ channels, which trigger contractions.
 
  a. Ca2+
  b. Na+
  c. K+
  d. Cl-


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helenmarkerine

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Reply #1 on: Jun 22, 2018
Answer to Question 1

Answer: A

Answer to Question 2

Answer: A


Frost2351

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Reply #2 on: Jun 22, 2018
Thank you


helenmarkerine

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Reply #3 on: Jun 22, 2018
No problem :)


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