Circulatory System

Front

What type of blood do veins carry back to the heart?

Back

Oxygen-poor blood.

Front

What is the main function of the circulatory system?

Back

To transport blood, nutrients, and gases throughout the body.

Front

Which of the following is NOT part of the circulatory system: heart, veins, arteries, or bones?

Back

Bones.

Front

Which organ is responsible for pumping and circulating blood?

Back

The heart.

Front

What is the approximate size and shape of the human heart?

Back

About the size and shape of a fist.

Front

What are the two main types of blood vessels in the circulatory system?

Back

Arteries and veins.

Front

What is the role of arteries in the circulatory system?

Back

To carry oxygen-rich blood away from the heart to the body.

Front

What is the role of capillaries in the circulatory system?

Back

To facilitate the exchange of oxygen, carbon dioxide, nutrients, and waste between blood and tissues.

Front

What is the function of red blood cells?

Back

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

Front

What is the significance of the heart's four chambers?

Back

They separate oxygen-rich blood from oxygen-poor blood and ensure efficient circulation.