Systems+of+the+body+P9

Nervous System Receives incoming information (senses). Sends messages to the body about how to react.

Skeletal System Provides Shape and structure to the body. Allows for movement. Protects vital organs. Produces blood cells. Integumentary System Protects the body from invaders by providing a tough protective layer. Warms the body. Cools the body. Muscular System Allows for movement of the body. Keeps head in position. Provides heat. Endocrine System Controls body functions using chemicals messengers called hormones.

Respiratory System
Brings oxygen into the body. Gets rid of carbon dioxide. Urinary System Cleanses the blood. Rids the body of wastes. Maintains salt and water balance. Immune System Fights disease. Digestive System Breaks down food into smaller molecules. Absorbs these nutrients into the body. Reproductive System Produces sex cells (sperm and eggs). Produces sex hormones (testosterone, estrogen). Nurtures the unborn baby (fetus).