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प्रश्न
Heart sounds are produced due to ______.
-
closure of tricuspid and bicuspid valves
-
rushing of blood through valves producing turbulence
-
closure of atrioventricular and semilunar valves
-
entry of blood into auricles
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उत्तर
Heart sounds are produced due to closure of tricuspid and bicuspid valves and closure of atrioventricular and semilunar valves.
Explanation:
The first sound "LUBB" is produced when the atrio-ventricular (tricuspid and bicuspid) valves get closed sharply at the start of ventricular systole. The second sound "DUP" is produced when at the beginning of ventricular diastole, the semilunar valves at the roots of aorta and pulmonary artery get closed.
संबंधित प्रश्न
Which side of the heart (left or right) contains oxygenated blood?
Find the odd one out.
Why does the left ventricle possess a thicker wall than the right ventricle?
Fill in the blanks with suitable words given below:
The oxygen-rich blood is pumped into different parts of the body through ______.
Name the organ from which oxygenated blood goes into the heart
Why is circulatory system also known as transport system?
Differentiate between:
Red blood cells (RBC) and White blood cells (WBC)
Name the Following
The enzyme which converts fibrinogen to fibrin.
The nodal tissue located in the lower left corner of right atrium is ______.
What are the normal values of blood pressure in a normal human adult?
