Ace the Ivy Tech Anatomy & Physiology II (APHY 102) Heart Test 2026 – Pump Up Your Knowledge!

Valves ensure one-way blood flow and prevent backflow as the heart relaxes between beats. The aortic semilunar valve sits at the exit of the left ventricle into the aorta. When the heart finishes contracting, the pressure in the aorta stays higher than in the ventricle, so the aortic valve cusps meet and close, stopping blood from flowing back into the left ventricle. The other valves are in different locations and regulate flow between other chambers: the mitral and tricuspid valves prevent backflow from ventricles into the atria, and the pulmonary semilunar valve prevents backflow from the pulmonary artery into the right ventricle.