contestada

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 amount of ATP in the neuromuscular junction must increase.

C. The concentration of calcium in the myofibril must decrease.

D. Myosin and actin must attach to each other.


Answer: C. The concentration of calcium in the myofibril must decrease.


I hope this helps.

Respuesta :

patrickfranklinroe

Answer:

c

Explanation:

Relaxation occurs when stimulation of the nerve stops. Calcium is then pumped back into the sarcoplasmic reticulum breaking the link between actin and myosin. Actin and myosin return to their unbound state causing the muscle to relax.

Otras preguntas