Human Body Systems

Front

Muscular tube connecting the mouth to the stomach

Back

Esophagus

Front

Holds bones together to form joints

Back

Ligaments

Front

Connective tissue that is more flexible than bones

Back

Cartilage

Front

Large dome-shaped muscle used in breathing

Back

Diaphragm

Front

Muscles inside many internal organs

Back

Smooth muscles

Front

The system responsible for transporting blood throughout the body

Back

Circulatory system

Front

The organ that pumps blood in the circulatory system

Back

Heart

Front

The process of breaking down food into smaller components

Back

Digestion

Front

The system that includes the brain and spinal cord

Back

Nervous system

Front

The basic unit of life

Back

Cell