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Open and Closed Circulatory System

Foreman ovale

Question

Foreman ovale

A

Connects the two atria in the foetal heart.

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B

Is a condition in which the heart valves do not completely close.

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C

Is a shallow depression in the inter ventricular septum.

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D

Is a connection between the pulmonary trunk and the aorta in the foetus.

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Solution

The correct option is A Connects the two atria in the foetal heart.
Foramen ovale is an opening in the interatrial septum of the foetal heart through which both the atria communicate with each other.
In adults, this aperture is closed and is represented by a small oval depression called fossa ovalis.

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Q. The Pulmonary trunk and systemic aorta of Foetus, connected by?

Q. Choose the correct statements :
I. The heart is a hollow organ present in the thoracic cavity
II. The pulmonary veins are guarded by valves which prevent the backflow of blood.
III. The walls of the left ventricle are about three times thicker than the right ventricle.
IV. Pulmonary arteries carry deoxygenated blood to the lungs
V. The foetal heart has an opening between two atria

Q. Read the following statements and select the correct option.
A. Damage to chordae tendinae of semilunar valves in aorta causes back flow of blood in left ventricle.
B. Closure of atrio-ventricular valves during ventricular systole generates first heart sound.

Q. Read the following statements and select the correct option.
A. Damage to chordae tending of semilunar valves in aorta causes back flow of blood in left ventricle.
B. Closure of atrio-ventricular valves during ventricular systole generates first heart sound

Q. Assertion: Backflow of blood can happen in the pulmonary trunk.
Reason: Pulmonary trunk is not guarded by any valves.

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