The endocrine system consists of glands that make hormones. Your body uses hormones to control growth, development, metabolism, reproduction, mood, and other functions.

There are 11 major organ systems in the human body. Circulatory system. The circulatory system is a body-wide network of blood, blood vessels, and lymph. Powered by the heart, ...

The human body is a wonderous thing, especially when you consider how intricate and efficient each bodily system is. For instance, an adult’s blood vessels could encircle the earth 2.5 times if ...

The largest muscle in the human body is the Gluteus Maximus. It is responsible for keeping your posture upright, and is the principal antigravity force working when you walk up stairs.

Digestive System Function. Digestion is the complicated process of turning the food you eat into nutrients, which your body uses for energy, growth, and cell repair.

There are four anatomical sling systems of the body, and we asked a strength and conditioning coach to explain each one, including how to exercise them and build a stronger body.

The integumentary system is an important organ system in the human body, comprising of the skin, hair, nails, and glands that produce sweat and oil. Learn more.

Sometimes, the human body short-circuits—literally. A doctor breaks down the rare but terrifying “system override” glitch where normal functions go out of sync. From heart rate spikes to full-body ...

The human body has three primary lines of defense to fight against foreign invaders, including viruses, bacteria, and fungi. The immune system’s three lines of defense include physical and ...