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प्रश्न
Draw labelled diagram of internal structure of human heart.
Label right atrium, mitral valve, left ventricle and pulmonary semilunar valve.
Write a function of Eustachian and tricuspid valve found in human heart.
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उत्तर
- Eustachian valve guards the opening of the postcaval vein (inferior vena cava).
- The tricuspid valve is present in the right AV aperture and prevents backflow of blood, maintaining a unidirectional blood flow.
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संबंधित प्रश्न
Normal activities of the heart are regulated by ______________.
Name of the valve between the left atrium and left ventricle and give its significance.
State the Function: Chordae tendinae
Column 2 is a list of items related to ideas in Column 1. Match the term in Column 2 with the suitable idea given in Column 1.
| Column 1 | Column 2 |
| (i) Superior vena cava | (a) Collect deoxygenated blood from the wall of the heart. |
| (ii) Inferior vena cava | (b) Carry oxygenated blood to heart muscle. |
| (iii) Pulmonary vein | (c) Collects deoxygenated blood from upper part. |
| (iv) Coronary veins | (d) Collects deoxygenated blood from lower parts. |
| (v) Coronary artery | (e) Brings oxygenated blood from lungs. |
| (vi) Aorta | (f) Large artery |
| (vii) Heart attack | (g) Large vein |
| (viii) Blood Pressure | (h) Oxygenated blood |
| (ix) Tricuspid valve | (i) Sphygmomanometer |
| (x) Bicuspid valve | (j) Allows blood flow from right auricle to right ventricle. |
| (xi) Contraction and relaxation of heart | (k) Blocking of coronary arteries. |
| (l) Cardiac muscle. | |
| (m) Allows blood flow from left auricle to left ventricle. | |
| (n) Allows blood flow from right ventricle of pulmonary aorta. |
Why are the walls of the left ventricle thicker than the other chambers of the heart?
Identify the INCORRECT statement regarding heart.
Identify the CORRECT route through which impulse travels in the heart.
Heart sound 'dub' is caused due to closing of ______.
Enlist the names and locations of valves of human heart giving function of each.
State the exact location of the following structure.
Papillary muscles
