________ provides the energy to help the myosin heads form and break the crossbridges with actin.
A)ATP
B)Calcium
C)Potassium
D)Vitamin D

Question

Quizplus · Accepted Answer

ATP is the primary source of energy for muscle contraction. The myosin heads need energy from ATP to form crossbridges with actin, and then to break them. Calcium plays a role in muscle contraction by regulating the release of neurotransmitters, but it does not directly provide energy for crossbridge formation and detachment. Potassium and Vitamin D are not directly involved in muscle contraction.

________ Provides the Energy to Help the Myosin Heads Form