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5 votes
Muscles are relaxed when..?

myosin is not bound to actin

myosin is bound to actin

cross bridges have formed

myosin has bent toward the center of the sarcomere

2 Answers

5 votes

Answer: A

Step-by-step explanation:

User Mattz
by
8.8k points
1 vote

Answer:

myosin is not bound to actin

Step-by-step explanation:

When the muscle relaxes the verve stimulation stops and the calcium is then pumped back into the sarcoplasmic reticulum which causes a break in the link between actin and myosin. Actin and myosin, therefore, return to their unbound state causing the muscle to relax.

User William Remacle
by
8.1k points
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