Mammoth Memory

Semilunar valves

The pulmonary valve and aortic valve are known as the semilunar valves. They are the valves that prevent blood flowing back into the heart once it has been pumped away through the arteries. They are the last valves to leave the heart.

Mnemonic depicting that similunar valves stop blood from re-entering the heart

As you leave the heart, turn the semilunar light off.

More Info