Many body systems work together for proper functioning of the body and to maintain internal homeostasis. The works to break down food eaten before exercising. The takes in the nutrients obtained from the food. The body sweats as a mechanism to cool off, because the is working to flush out toxins.

The (circulatory, digestive, excretory) works to break down food eaten before exercising. The (circulatory, digestive, excretory) takes in the nutrients obtained from the food. The body sweats as a mechanism to cool off, because the (circulatory, digestive, excretory) is working to flush out toxins.

Explanation:

clinically, some people often have repeated allergies, eczema and respiratory infections or other parts of the infection, in this case, in addition to some routine tests such as tests for white blood cells, immunoglobulin series, lymphocyte subsets, etc., the five immune immunoglobulin tests are also necessary.