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The opening of pulmonary vein is without...

The opening of pulmonary vein is without valve because

A

It is a very small aperture

B

It has low blood pressure

C

Its opening is oblique

D

None of these

Text Solution

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The correct Answer is:
C
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Pulmonary vein carries

In the human heart, the I. left auricle has opeining of pulmonary veins and receives oxygenated blood from lungs. II. Right auricle opens into the right ventricle and the auriculoventricular aperture is guarded by a bicuspid valve. III. valves are attached to the wall of ventricles by means of chordae tendinae. IV. opening of left auricle into left ventricle is guarded by a tricuspid valve. Choose the correct answer.

One of the following blood vessel is without valves

Pulmonary veins are those which :-

Renal veins opens into

Pulmonary veins of Frog open into

Pulmonary vein carries blood from:

A : Isovolumetric systole of a normal cardiac cycle is responsible for the opening of semilunar valves causing the blood flow into aortic aorta and pulmonary aorta. R : During isovolumetric systole, intraventricular pressure increases as semilunar and AV valves are closed and ventricles are contracting .

CENGAGE BIOLOGY-BODY FLUIDS AND CIRCULATIONS -ARCHIVES (Choose the correct option)
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