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.

Think of it almost like a subway map. However you enjoy exercising, knowing about the sling systems of the body could help you maximize your training efforts and results, increase fitness ...

What Is the Nervous System? Your nervous system is your body's main communication system. It sends messages from your brain to the rest of your body and helps you respond to changes inside and ...

Your immune system includes your body's cells, tissues, and organs, which work together to fight off infections and diseases. But how much do you know about it? When you understand everything that ...

Space to play or pause, M to mute, left and right arrows to seek, up and down arrows for volume. Our bodies certainly are busy. All the different structures in us working together to achieve the ...

Your immune system is your body’s version of the military: sworn to defend against all who threaten it, both foreign and domestic. It has some really interesting ...