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Question

The connection between pulmonary and aortic arches in foetus is

A
Ligamentum teres
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B
Ductus arteriosus
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C
Foramen ovale
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D
All of the above
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Solution

The correct option is D Ductus arteriosus
In the developing foetus, the ductus arteriosus also called the ductus Botalli, is a blood vessel connecting the pulmonary artery to the proximal descending aorta. It allows most of the blood from the right ventricle to bypass the foetus's fluid-filled non-functioning lungs. Upon closure at birth, it becomes the ligamentum arteriosum.
So, the correct answer is 'Ductus arteriosus'

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