Learn all about the human body's many systems and some of its individual organs, both vital and vestigial. When you purchase through links on our site, we may earn an affiliate commission. Here ...

Your sympathetic nervous system, which prepares your body to respond to stress or danger, becomes more active when you're stressed out. For instance, it boosts your heart rate and breathing ability.

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

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.

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 ...

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 ...

For 150 years, 98.6 degrees Fahrenheit was thought to be the average body temperature for a healthy human being. But that number is wrong. But for at least the past two decades, researchers have ...

Learn about the digestive system with these interactive learning resources for KS2 Science students aged 7-11 from BBC Bitesize.