Inside Human Body

An adult skeleton has 206 bones. What is the functions of the bones? Bones protect and support your body.

Some joints have cartilage. Cartilage is slippery. It lets joints move more easily

Ligaments are touch bands. They connect bones.

tendons are like ligaments but they attach muscles to bones. Muscles shorten and lengthen to let you move.

The brain controls the body. Nerves carry messages from the brain to your body and bring messages back too.

The heart pumps blood through blood vessels. Arteries carry blood away from your heart. Veins carry blood back. Lungs help you breathe.

Esophagus is a tube of muscles. It squeezes food into your stomach. The stomach mixes the food. Then, it squeezes the food into your intestines.