Q90 / 200 · MHT CET - Medical 2026 (25 April Shift 2) · Biology
The fossa present on the interatrial septum is the remnant of ___________.
- Aforamen of Monroe
- Bforamen of Luschka
- Cforamen of Magendie
- Correct answerDforamen ovalis
Solution
The fossa ovalis is an oval-shaped depression present on the interatrial septum in the right atrium of the heart.
During fetal development, there is an opening between the right and left atria called the foramen ovale (or foramen ovalis), which allows blood to bypass the non-functioning fetal lungs.
After birth, this opening closes and leaves a remnant known as the fossa ovalis.
The other options (foramen of Monroe, foramen of Luschka, and foramen of Magendie) are apertures associated with the ventricular system of the brain.
Answer: foramen ovalis
During fetal development, there is an opening between the right and left atria called the foramen ovale (or foramen ovalis), which allows blood to bypass the non-functioning fetal lungs.
After birth, this opening closes and leaves a remnant known as the fossa ovalis.
The other options (foramen of Monroe, foramen of Luschka, and foramen of Magendie) are apertures associated with the ventricular system of the brain.
Answer: foramen ovalis
Hence, the correct answer is option: 'D'.