Circulatory System Quiz

What is the main function of the heart?

• Filter blood

• Digest food

• Produce hormones

• Pump blood

Which chamber of the heart receives oxygenated blood from the lungs?

• left atrium

• right ventricle

• right atrium

• left ventricle

What is the largest artery in the human body?

• capillary

• vein

• pulmonary artery

• aorta

What type of blood vessels carry blood away from the heart?

• Veins

• Capillaries

• Lymphatic vessels

• Arteries

What is the smallest blood vessel in the human body?

• capillary

• artery

• vein

• lymphatic vessel

What is the process of blood flowing through the heart and body called?

• respiration

• digestion

• excretion

• circulation

What is the purpose of valves in the heart?

• The purpose of valves in the heart is to store excess blood.

• The purpose of valves in the heart is to produce red blood cells.

• The purpose of valves in the heart is to ensure blood flows in the correct direction and prevent backflow.

• The purpose of valves in the heart is to regulate blood pressure.

What is the function of capillaries?

• The function of capillaries is to transport blood from the heart to the lungs.

• The function of capillaries is to regulate body temperature.

• The function of capillaries is to facilitate the exchange of oxygen, nutrients, and waste products between the blood and surrounding tissues.

• The function of capillaries is to produce red blood cells.

What is the name of the blood vessel that carries blood back to the heart from the body?

• arteries

• veins

• lymphatic vessels

• capillaries

What is the average adult human blood volume?

• 5 liters

• 1 liter

• 10 liters

• 50 liters