Fill in the blanks to complete the following section on fetal circulatory adapta

Question

Fill in the blanks to complete the following section on fetal circulatory adaptations. In the fetal circulatory system, the _________ bypasses the _________ (organ) and after birth, became the ligamentum venosum. The _______ is another fetal blood vessel which branches off the ________ and directs blood ejected from the _______ into the aorta. This adaptation bypasses the _______ (organs) and becomes the _____ after birth. In contrast, the ______ is not a fetal blood vessel but an opening between the two _____ of the heart and eventually becomes the _____after birth.

Explanation / Answer

In fetal circulatory system the DUCTUS VENOSUS bypasses the LIVER and after birth becomes the ligamentumvenosum.The DUCTUS ARTERIOSUS is another fetal blood vessel which branches off the AAORTIC ARCHES and direct blood ejected from PULMONARY ARTERY into the aaorta.This adaptation bypasses the LUNGS and becomes the LIGAMENTUM ARTERIOSUM after birth.In contrast the FORAMEN OVALE is not a fetal blood vessel but an opening between the two chambers of heart and eventually becomes the FOSSA OVALIS after birth.

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