Assertion-In human heart there is no backflow of blood from ventricles to auricles. Reason- Semilunar valves prevent the backflow of blood from ventricles to auricles.
Answers
Answer:
Assertion : During diastole, ventricles receives blood from auricles.
Reason : During ventricular diastole (stage of rapid inflow) the pressure inside auricles is greater than ventricles.
In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as
(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 assertion and reason are false.
Q. Assertion: Strain is a unitless quantity.
Reason: Strain is equivalent to force.
Answer:
assertion is true reason is false
Explanation:
Tricuspid valves are the membranous structure which are present between the right auricle and right ventricle. It prevents the backflow of blood into the right atrium.
Bicuspid valve is present between left auricle and left ventricle. It prevents the backflow of the blood to left auricle.
Mitral valve is also known as a bicuspid valve.
Aortic and pulmonary semilunar valves are present at the base of the aorta and the pulmonary artery. It prevents the backflow of the blood in the heart.
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