Red blood cells are made in the?

Which of the chambers has the highest pressure?

Which blood vessel carries the deoxygenated blood to the right atrium?

Which blood vessels carries oxygenated blood from the heart to the whole body?

What happen when the ventricles of the heart contract?

Which valve action results from an increase in pressure in the atrial of the heart?

Where does the sino-atrial node, which generates the electrical impulses that coordinate heart-muscle contracted is located in?

Right atrium and ventricle are separated from the left atrium and ventricle by______________

Where do aorta pump oxygenated blood?