The body utilizes ATP that is stored in the muscles to perform anaerobic exercises. ATP stands for Adenosine Triphosphate which is a complex organic chemical - the source of energy that keeps everything going. The ATP is used for many cell functions including transport work moving substances across cell membranes, mechanical work, supplying the energy needed for muscle contraction...
Glands produce and release substances that perform specific functions in the body. the adrenal gland releases cortisol that helps you deal with stress, such as adrenaline when you’re doing something that gives you high stress or going through something shocking/ traumatizing. The thyroid gland releases hormones that control your metabolism
Smooth muscles are involuntary. so it would be A for a fact.
Walking is a type of cardiovascular exercise because it builds stamina in your body and also increases the efficiency of your heart and lungs.
