Give location and function of any four valves present in human heart.
Q.27 Give location and function of any four valves present in human heart.
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Answer:
| Valve | Location | Function |
|---|---|---|
| 1. Tricuspid valve (three cusps) | Between the right atrium and right ventricle (right atrio-ventricular aperture) | Allows blood to flow from right atrium to right ventricle and prevents its backflow into the atrium during ventricular systole. |
| 2. Bicuspid (mitral) valve (two cusps) | Between the left atrium and left ventricle | Allows blood to flow from left atrium to left ventricle and prevents backflow during ventricular systole. |
| 3. Pulmonary semilunar valve | At the opening of the pulmonary trunk from the right ventricle | Lets blood pass into the pulmonary artery and prevents its backflow into the right ventricle during diastole. |
| 4. Aortic semilunar valve | At the opening of the aorta from the left ventricle | Lets blood pass into the aorta and prevents its backflow into the left ventricle during diastole. |
Other valves: Eustachian valve at the opening of the inferior vena cava and Thebesian valve at the opening of the coronary sinus into the right atrium. The chordae tendineae and papillary muscles prevent the cuspid valves from turning into the atria.
Doubtly AI
· 28 Oct 2026
AI-verified · Oct 2026
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