One of the countryâs largest annual fireworks displays. Watch the Target Fireworks light up the Minneapolis sky! Come early for Aquatennial Pre-Fireworks Festivities beginning at 6 pm and enjoy food trucks, your favorite festival treats, live music and much more. A full schedule of the pre-fireworks festivities and music lineup will be announced soon.
Heart valve disease occurs if one or more of your heart valves don't work well. The heart has four valves: the tricuspid, pulmonary, mitral, and aortic valves. These valves have tissue flaps that open and close with each heartbeat. The flaps make sure blood flows in the right direction through your heart's four chambers and to the rest of your body.
Home Â» Heart valve. Definition. noun, plural: heart valves. (anatomy) Any of the valves of the heart that prevents the back flow of blood through its cusps or flaps of tissues. Supplement. In humans, there are four main valves of the heart: (1) left atrioventricular valve, (2) right atrioventricular valve, (3) aortic valve, and (4) pulmonary valve. The left and right atrioventricular valves are also called mitral valve and tricuspid valve, respectively.