Human Body Systems for Grade 4

Front

Circulatory System

Back

Heart, blood, blood vessels

Front

Respiratory System

Back

Lungs, breathing

Front

Skeletal System

Back

Bones, support

Front

Digestive System

Back

Stomach, intestines

Front

Muscular System

Back

Muscles, movement

Front

Lungs

Back

Oxygen exchange

Front

Bones

Back

Structure and support

Front

Stomach

Back

Digests food

Front

Muscles

Back

Enable movement

Front

Heart

Back

Pumps blood