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Assertion: In the human heart, there is no mixing of oxygenated and deoxygenated blood.
Reason: Presence of valves in the heart allows the movement of blood in one direction only
  • a)
    If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  • b)
    If both Assertion and Reason are true but Reason is not the correct explanation of Assertion
  • c)
    If Assertion is true but Reason is false.
  • d)
    If both Assertion and Reason are false.
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Assertion: In the human heart, there is no mixing of oxygenated and de...
In the human heart, there is no mixing of deoxygenated and oxygenated blood due to the presence of inter - atrial and inter - ventricular septum. These septa completely divide the atria and ventricles into right and left and thus avoid mixing of blood. The presence of valves that prevents the backflow of the blood. The two atria are separated from the ventricles by membranous valves. The valve separating the right atrium from the right ventricle is known as the right atrioventricular valve or tricuspid valve (as it is made of three flaps or cusps). The valve separating the left atria and the left ventricle is called left atrioventricular valve or the bicuspid valve or the mitral valve (since it is made of two flaps). They allow the flow of blood from atria to ventricles and not in the backward direction. At the base of the aorta are present three membranous, pocket-shaped semilunar valves. These valves check the return of the blood to the ventricle.
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Assertion: In the human heart, there is no mixing of oxygenated and deoxygenated blood.Reason: Presence of valves in the heart allows the movement of blood in one direction onlya)If both Assertion and Reason are true and Reason is the correct explanation of Assertion.b)If both Assertion and Reason are true but Reason is not the correct explanation of Assertionc)If Assertion is true but Reason is false.d)If both Assertion and Reason are false.Correct answer is option 'B'. Can you explain this answer?
Question Description
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