U3 S9

get energy, use energy to run their bodies and move, reproduce, get rid of waste, protect their bodies, and coordinate all the functions of a body.

groups of organs working together.

spinal cord. The brain sends a signal to respond.

allows movement of body parts. It works with the skeletal system to help you move.

is made up of bones, ligaments, and cartilage. It supports the body and protects important organs. It also makes blood cells.

gathers oxygen from the environment and gets rid of carbon dioxide from the body. The exchange occurs in the lungs.

returns leaked fluid back to the blood. As a major part of the immune system, it has cells that help get rid of invading bacteria and viruses.

makes chemical messages that help to regulate conditions inside the body. They also influence growth and development.

moves blood through the body. The heart is the pump for this system. Blood flows through blood vessels.

gets rid of the body's wastes. The urinary system removes wastes from blood. The skin, lungs, and digestive system also remove wastes from the body.