Question

The immediate regeneration of energy after ATP is used for muscle contraction is facilitated by

• A. Glucose
• B. Glycogen
• C. Lactic acid
• D. Creatine phosphate

Answer 1

Answer: (B), (D)

Creatine phosphate

Muscles need the energy to produce contractions. The energy is derived from adenosine triphosphate (ATP) present in muscles. Muscles tend to contain only limited quantities of ATP. When depleted, ATP needs to be resynthesized from other sources, namely creatine phosphate (CP) and muscle glycogen.