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’s how ...

Each organ in your body’s 11 organ systems work so you can perform activities like breathing, digestion, and movement. Different organs can work together to perform a common function, like how the ...

An introduction to the amazing functions of the human body's nervous system. An introduction to the amazing functions of the human body's nervous system. This extremely advanced part of our biology is ...

The physiological adaptations that your body undergoes when you exercise help protect you against chronic diseases such as cancer, high blood pressure, diabetes and heart disease. Your body systems ...