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the ligamentum arteriosum develops from the ductus arteriosis in the fetus/embryo. the ductus arteriosis is a bypass mechanism where blood is not transported to the lungs as they are not yet functional. after birth lungs are necessary (nolonger a placenta for oxygen) so ductus arteriosum closes up and becomes the ligamentum arteriosum
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Formen ovale Ductus arteriosus Ductus venosus what will these shunts become in a newborn?
In a newborn, the foramen ovale will close and become the fossa ovalis. The ductus arteriosus will close and become the ligamentum arteriosum. The ductus venosus will close and become the ligamentum venosum.
What is the function of ligamentum arteriosum?
It is the remnant of ductus arteriosus a blood vessel which bypassed the blood to the heart in foetus as the lungs are not functioning till the child is born. After birth once the lungs start functioning, it starts to close and is completely closed by second month.
What is the fate of the ductus arteriosus?
The ductus arteriosus typically closes shortly after birth in response to changes in oxygen levels, resulting in a structure known as the ligamentum arteriosum. In some cases, the ductus arteriosus fails to close properly, leading to a congenital heart defect known as patent ductus arteriosus (PDA), which may require surgical intervention to correct.
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