Question

The perforation between left and right atria of a fetal heart is known as

• A. Foramen ovale
• B. Ductus arteriosus
• C. Fossa ovalis
• D. Ligamentum arteriosum

Hint:

Review the fetal circulatory structures and their transformations after birth.

Answer 1

The Correct Option is A

The foramen ovale is a vital part of fetal circulation, allowing blood to flow directly from the right atrium to the left atrium, bypassing the non-functional fetal lungs. After birth, the foramen ovale closes due to increased pressure in the left atrium, leaving a depression called the fossa ovalis.