Blood travels directly into the left atrium via the ____, the opening between the right and left ventricle.

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The foramen ovale is the opening between the right and left atrium in the fetal heart that allows blood to bypass the pulmonary circulation. After birth, this opening usually closes and becomes the fossa ovalis. However, in some individuals, it can remain partially or completely open, leading to a condition called patent foramen ovale. Blood does not travel directly into the left atrium via the ligamentum arteriosum, ductus arteriosus, or SVC.

Blood Travels Directly into the Left Atrium Via the ____