Human Body Systems

Front

What is the correct order of the levels of organization from smallest and most simple to largest and most complex?

Back

cell, tissue, organ, organ system

Front

The function of the nervous system is to? What is the main organ it includes?

Back

Send and receive messages. brain

Front

The function of the digestive system is to? What is the main organ it includes?

Back

Break down food. stomach

Front

What is the function of the circulatory system and its main organ?

Back

Pump blood around the body. heart

Front

What is the function of the muscular system and its main organ?

Back

Help the body move. muscles

Front

The function of the excretory system is to? What is the main organ it includes?

Back

Remove waste. kidneys

Front

The function of the respiratory system is to? What is the main organ it includes?

Back

Bring in oxygen, and remove carbon dioxide. lungs

Front

How do the respiratory and circulatory systems work together?

Back

The respiratory system brings in oxygen, and the circulatory system moves it around.

Front

What does the skeletal system do?

Back

Allow us to move and give structure to the body

Front

What is the nervous system made of?

Back

The brain, spinal cord, nerves