Circulatory System

What is the liquid portion of blood called?

• Plasma

• Red blood cells

• White blood cells

• Platelets

Which component of blood carries oxygen?

• Red blood cells

• White blood cells

• Platelets

• Plasma

What is the color of human blood?

• Red

• Blue

• Green

• Yellow

What is the purpose of valves in the heart?

• Separate chambers

• Prevent backflow of blood

• Deliver oxygen to the heart

• Coordinate heart contractions

Which blood vessels carry blood away from the heart?

• Arteries

• Veins

• Capillaries

• Coronary arteries

Where does deoxygenated blood enter the heart?

• Right atrium

• Left atrium

• Right ventricle

• Left ventricle

Which valve separates the right atrium and right ventricle?

• Tricuspid valve

• Mitral valve

• Pulmonary valve

• Aortic valve

Where does oxygenated blood leave the heart?

• Aorta

• Pulmonary artery

• Pulmonary vein

• Coronary artery

What is the purpose of coronary arteries?

• Supply blood to the heart

• Deliver oxygen to the lungs

• Transport nutrients to organs

• Fight infections

What is the coordinated sequence of the heart's contractions and relaxations called?

• Cardiac cycle

• Pulmonary cycle

• Coronary cycle

• Respiratory cycle