Which of the following is NOT a difference between heart and skeletal muscle?
A)Heart muscle is completely aerobic.
B)Heart muscle prefers fatty acids as fuel.
C)Heart muscle has more phosphocreatine than skeletal muscle.
D)Heart muscle has limited quantities of glycogen.

Question

Quizplus · Accepted Answer

Heart muscle actually has less phosphocreatine compared to skeletal muscle. Phosphocreatine serves as a rapid source of high-energy phosphate for the synthesis of ATP, and skeletal muscle, which can experience sudden and intense bursts of activity, has a greater need for rapid ATP regeneration through phosphocreatine than heart muscle, which operates more continuously.

Which of the Following Is NOT a Difference Between Heart