Do you know how much you heart valve?

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The valves of the heart are located within the chambers of the heart and are critical to the proper flow of blood through the heart. All of the valves, when functioning normally, act as one-way valves, allowing blood to flow either from one chamber to another, or allowing blood to flow out of the heart, in only one direction. The valves control the flow of blood through the heart by opening and closing during the contractions of the heart. The opening and closing functions of the valves are controlled by pressure differences generated within the heart, as well as some muscles located within the heart[1]

The four valves:

• The tricuspid valve
• The pulmonic or pulmonary valve
• The mitral valve
• The aortic valve

The atrioventricular valves separate the atria from the ventricles and include the tricuspid valve, which separates the right atrium from the right ventricle.
  and the mitral valve, which separates the left atrium from the left ventricle. The tricuspid valve has three leaflets; the mitral valve has two. Both valves have chordae tendineae that anchor the valve leaflets to the papillary muscles and ventricular wall.
The semilunar valves are located between the ventricles and their corresponding arteries. The pulmonary valve lies between the right ventricle and the pulmonary artery; the aortic valve lies between the left ventricle and the aorta [2]

References:
[1] http://www.cts.usc.edu/hpg-valvesoftheheart.html.
[2] Brunner & Suddarth's. (2011). The 10th edition of Brunner & Suddarth's Textbook of Medical-Surgical Nursing. Lippincott, Williams & Wilkins, Philadelphia, Pa.