The primary source of energy that our muscles use as fuel is called

Question

Quizplus · Accepted Answer

Adenosine triphosphate (ATP) is the primary source of energy used by our muscles for contraction. When ATP is broken down, energy is released to power muscle movement. Oxygen is necessary for the production of ATP through cellular respiration, but it is not directly used as fuel by our muscles. Lactic acid is a byproduct of anaerobic metabolism when there is insufficient oxygen available to produce ATP, and protein is not a primary source of energy for our muscles.

The Primary Source of Energy That Our Muscles Use as Fuel