A group of tissues working together to carry out a particular function.

Contains a group of tissues and organs that work together

The hard structure that provides a framework for the body

Protects vital organs and provides structure. Adults have 206.

A system consisting of different muscles that are used to allow motion in the body

The organs and tissues involved in transporting blood throughout the body

Referring to the heart. Heart-related.

Muscly organ that pumps blood throughout the body.

Body system that transports oxygen throughout the body (takes in oxygen and gives off carbon dioxide)

Largest internal organs that remove carbon dioxide and provide oxygen to the blood

The tube in the throat that carries air to the lungs (windpipe)

System consisting of nerves that send messages to the body

Command center of the nervous system; enclosed within the skull. Teachers eat these for breakfast.

Sends signals between the brain and the rest of the body

Body system that breaks down food and absorbs nutrients; gets rid of waste

Tube connecting the mouth to the stomach

Organ made of smooth muscle responsible for breaking down food for digestion.