Human Body Systems

Front

What are the three main structures of the nervous system?

Back

The brain, spinal cord, and nerves.

Front

What is the circulatory system made up of?

Back

Blood vessels, the heart, and blood.

Front

What are the four main organs of the respiratory system?

Back

Lungs, trachea, diaphragm, and intercostal muscles.

Front

What is the main function of the digestive system?

Back

To digest food, absorb nutrients, and remove waste.

Front

What is the main function of the respiratory system?

Back

To carry oxygen to the cells in your body and carry carbon dioxide away from your cells.

Front

What is the role of the brain in the nervous system?

Back

The brain processes information and coordinates responses.

Front

What does the heart do in the circulatory system?

Back

The heart pumps blood throughout the body.

Front

What is the function of blood vessels?

Back

Blood vessels transport blood to and from the heart.

Front

What is the role of the lungs in the respiratory system?

Back

The lungs facilitate the exchange of oxygen and carbon dioxide.

Front

What is the diaphragm's function in breathing?

Back

The diaphragm contracts and relaxes to help draw air into and push air out of the lungs.