Question

Which process must occur for a muscle to be able to relax?

( A.
A nerve must initiate an action potential in the muscle fiber.
• B.
The concentration of calcium in the myofibril must decrease.
• c.
Myosin and actin must attach to each other.
O D.
The amount of ATP in the neuromuscular junction must increase.

Answer 1

The answer is A).

A nerve must initiate an action potential in the muscle fiber.

Step-by-step explanation: