1.

Foramen ovaleA. Connects the two atria in the foetal heartB. Connects pulmonary trunk and aorta in foetusC. Is condition in which heart valves do not completely closeD. Is a shallow depression in the inter-ventricular septum

Answer» Correct Answer - A
In the foetal heart, foramen ovale is an opening in the inter-atrial septum which is closed in adult and represented by an oval depression called foss ovalis.
In the embryonic period, a blood vessel called suctus arteriosus shunts blood from the pulmonary aorta into systemic aorta.
But after birth, ductus arteriosus closes, leaving a remnant called ligamentum arteriosum. The artium and the ventricle of the same side are also separated by a thick fibrous tissue called the atrio-ventricular ceptum.


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