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  • In mammalian embryos, there is a narrow ductus arteriosus that allows communication between the pulmonary aorta and the carotid-systemic aorta. However, as the embryo dev

In mammalian embryos, there is a narrow ductus arteriosus that allows communication between the pulmonary aorta and the carotid-systemic aorta. However, as the embryo develops into an adult, this connection closes, resulting in the following condition, that is

Option: 1

Fossa-ovalis


Option: 2

Carotico pulmonary aperture


Option: 3

Ligamentum arteriosus


Option: 4

None of the above


Answers (1)

best_answer

The correct answer is "Ligamentum arteriosus."

During fetal development, the ductus arteriosus allows blood to bypass the lungs since the fetus receives oxygen from the placenta. After birth, the lungs take over the oxygenation process, and the ductus arteriosus closes. It constricts and transforms into the ligamentum arteriosus, a fibrous cord made of connective tissue. The ligamentum arteriosus is a non-functional remnant of the fetal ductus arteriosus and is found between the pulmonary artery and the aorta in adult humans.Hence, the correct answer is option 3. 

Posted by

Devendra Khairwa

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