Human Organ System

Digestive System

Breaks down food into simple substances

Absorb these substances so that they can be used by the body

Organs include the mouth, gullet, stomach, small intestine, large intestine and anus

Respiratory System

Takes air into the body

Removes air from the body

Organs include the nose, windpipe and lungs

Muscular System

Helps different parts of the body to move with the help of muscles

Circulatory System

Carries digested food, water and oxygen in the blood to all parts of the body

Carries waste materials away from different parts of the body

Organs include the heart and blood vessels

Skeletal System

Supports the body

Gives the body shape

Some major bones include the skull, ribcage and backbone.