The integumentary system is the physical system that forms the barrier between the external environment and the internal systems of the body. In humans, this system consists of skin, hair, nails, and ...

Although most known for its effect on the lungs, cystic fibrosis is a far-reaching condition that affects most of the body’s systems. Cystic fibrosis is a chronic condition that’s primarily associated ...

When a person is at rest, meditating or reading a book, the parasympathetic nervous system is at work. Also known as the "rest and digest" system, the parasympathetic nervous system is responsible for ...

Like a highway system, the vagus nerve branches profusely from your brain through your organs to marshal bodily functions, including aspects of mind such as mood, pleasure and fear. It is late at ...

The endocannabinoid system is found throughout the brain and body and plays a key role in everything from memory and learning to sleep to social behavior. During prolonged aerobic exercise, the body's ...