The The overall process of body chemistry called metabolism Physiologists are people who unravel its intricacies how the organs tissues function.
Physiology is a complementary subject to anatomy, study of structure.
Muscles, bones, nerves, and guts all have character chemical Three other chemical-based systems involve the body. These are the blood circulation endocrine or hormone system, and the lymphatic system.
Endocrinology is the study of hormone the body's chemical messengers.
It is a fairly recent science, begun in earn only about a century ago.
Lymph is a circulating fluid known as "blood's distant relative".
It has only a vague system of vessels, and no pump of its own in the way that blood has the heart (pp. 28-29), but it is vital to defend the body against disease and infection.