Respiratory and Circulatory Systems Quiz

What is the primary function shared by both the respiratory and circulatory systems?

• Break down food

• Fight infections

• Transport oxygen and nutrients

• Regulate body temperature

Oxygen enters the bloodstream through the:

• Trachea

• Diaphragm

• Alveoli

• Aorta

Which blood component carries oxygen to the body tissues?

• White blood cells

• Platelets

• Plasma

• Red blood cells

The circulatory system transports carbon dioxide from the cells to the:

• Heart

• Brain

• Lungs

• Liver

What is the function of the alveoli?

• Filter bacteria

• Control heart rate

• Exchange gases

• Pump blood

Which organ pumps oxygen-rich blood to the entire body?

• Lungs

• Liver

• Kidney

• Heart

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

• Pulmonary artery

• Pulmonary vein

• Aorta

• Vena cava

The diaphragm helps you:

• Circulate blood

• Digest food

• Inhale and exhale

• Pump lymph

Which part of the heart receives oxygenated blood?

• Right atrium

• Right ventricle

• Left atrium

• Pulmonary artery

Which blood vessels surround the alveoli for gas exchange?

• Veins

• Arteries

• Capillaries

• Arterioles