The immediate direct source of energy for skeletal muscle contraction is
A)creatine phosphate
B)myoglobin
C)ATP
D)ADP
E)glycogen

Question

Quizplus · Accepted Answer

ATP is the immediate direct source of energy for skeletal muscle contraction. When ATP is broken down into ADP (adenosine diphosphate) and Pi (inorganic phosphate), energy is released and this energy is used for muscle contraction. While creatine phosphate and glycogen can be used to generate ATP, they are not the immediate source of energy for muscle contraction. Myoglobin is a protein that stores oxygen in muscle, but it is not directly involved in generating energy for muscle contraction.

The Immediate Direct Source of Energy for Skeletal Muscle Contraction