Get to know the functions of your heart, blood vessels, and blood itself and how they work together to maintain your health.

Researchers are closer to understanding the earliest beginnings of the circulatory system during embryonic development – a discovery that could lead to ways to repair damage in the human body after ...

Adolescent athletes' cardiovascular system may adapt to increased cardiorespiratory fitness by increasing blood pressure, ...

The endocrine system uses chemical messengers called hormones to regulate a range of bodily functions through the release of hormones. The endocrine system is a network of glands and organs located ...

The parasympathetic nervous system (PSNS) is one of two major divisions of the larger autonomic system in your body. Its function is to keep the basic functions of your body working as they should.

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 ...