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May 14, 2022 · The valves can become damaged by age, infection or other chronic conditions, and some people are born with heart valve defects. A heart murmur is often the first sign of a heart valve problem, even before symptoms start. Have regular checkups to make sure your heart and its valves are functioning well.
Dec 22, 2017 · The valves of the heart are structures which ensure blood flows in only one direction. They are composed of connective tissue and endocardium (the inner layer of the heart). There are four valves of the heart, which are divided into two categories: Atrioventricular valves: The tricuspid valve and mitral (bicuspid) valve. They are located ...
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Nov 10, 2024 · The base of the heart is its broader upper part and is primarily formed by the atria, especially the left atrium. It faces posteriorly and is situated at the level of the 2nd intercostal space. The base is where the great vessels – the aorta, pulmonary trunk, and superior vena cava – enter or exit the heart. Surfaces of the Heart:
Aug 31, 2023 · The “lub” part of the heart sound arises from the atrioventricular valves, while the “dub” part of the sound is generated by the semilunar valves. The advent of the stethoscope has vastly improved the process of identifying normal and abnormal heart sounds which may be linked to valvular heart disease .
Valves are actually flaps (leaflets) that act as one-way inlets for blood coming into a ventricle and one-way outlets for blood leaving a ventricle. Normal valves have 3 flaps (leaflets), except the mitral valve. It only has 2 flaps. The 4 heart valves are: Tricuspid valve. This valve is located between the right atrium and the right ventricle ...
Heart valves can have both malfunctions at the same time (regurgitation and stenosis). When heart valves fail to open and close properly, the implications for the heart can be serious, possibly hampering the heart’s ability to pump blood adequately through the body. Heart valve problems are one cause of heart failure.
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The left ventricle is the major pumping chamber for the systemic circuit; it ejects blood into the aorta through the aortic semilunar valve. Heart Valve Structure and Function. A transverse section through the heart slightly above the level of the atrioventricular septum reveals all four heart valves along the same plane (Figure 19.12). The ...
