Human Circulatory System

Front

What is the main organ that pumps blood throughout the body?

Back

Heart

Front

What system is made up of the heart, blood, and blood vessels?

Back

Circulatory system

Front

Which organ does NOT belong to the circulatory system: liver, blood, veins, or capillaries?

Back

Liver

Front

What are the tubes that carry blood called?

Back

Blood vessels

Front

What carries blood from the body cells back to the heart?

Back

Veins

Front

What are the small blood vessels where gas exchange occurs?

Back

Capillaries

Front

What type of blood vessel carries blood away from the heart?

Back

Arteries

Front

What is the liquid component of blood that carries cells and nutrients?

Back

Plasma

Front

What is the function of red blood cells?

Back

To carry oxygen from the lungs to the body and carbon dioxide from the body back to the lungs.

Front

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

Back

To fight infections and protect the body against diseases.