The Human Heart and Circulatory System

What is the primary function of the circulatory system?

• To store oxygen

• To produce red blood cells

• To transport nutrients, gases, and hormones

• To digest food

Which chamber of the heart receives oxygen-poor blood from the body?

• Left Atrium

• Left Ventricle

• Right Atrium

• Right Ventricle

What prevents the backflow of blood in the heart?

• Septum

• Muscles

• Valves

• Capillaries

Which type of blood vessel carries oxygen-rich blood from the lungs to the heart?

• Pulmonary Artery

• Pulmonary Vein

• Aorta

• Vena Cava

Which chamber of the heart pumps oxygen-rich blood to the body?

• Right Atrium

• Right Ventricle

• Left Atrium

• Left Ventricle

What are the receiving chambers of the heart called?

• Ventricles

• Arteries

• Atria

• Valves

Which of the following is the largest artery in the body?

• Aorta

• Pulmonary Artery

• Superior Vena Cava

• Inferior Vena Cava

What is the main function of the valves in the heart?

• To pump blood

• To prevent backflow

• To produce blood cells

• To regulate heartbeat

The heart is located in which part of the body?

• Left side of the chest

• Right side of the chest

• Center of the chest

• Upper abdomen

How many chambers does the human heart have?

• 2

• 3

• 4

• 5