Front

What is the body's defense system that uses white blood cells and the spleen to fight against pathogens?

Back

Immune system

Front

What are the tiny blood vessels that deliver supplies to individual cells and take away waste materials?

Back

Capillaries

Front

Which system allows for the exchange of oxygen and carbon dioxide between air and blood?

Back

Respiratory system

Front

What system involves the heart moving blood to transport oxygen, carbon dioxide, and hormones throughout the body?

Back

Circulatory system

Front

What are the lower two chambers of the heart called?

Back

Ventricles

Front

What is the primary function of the lymphatic system?

Back

To help defend the body against pathogens and maintain fluid balance.

Front

What is the role of red blood cells in the circulatory system?

Back

To transport oxygen from the lungs to the body's tissues and carry carbon dioxide back to the lungs.

Front

What is the main organ of the respiratory system?

Back

Lungs

Front

What is the function of the heart in the circulatory system?

Back

To pump blood throughout the body.

Front

What are arteries responsible for in the circulatory system?

Back

Carrying oxygenated blood away from the heart to the body.