Question:
The fossa present on the interatrial septum is the remnant of ___________.
The fossa present on the interatrial septum is the remnant of ___________.
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In the foetus, blood passes between atria through an opening that closes after birth.
Updated On: Nov 12, 2026
- foramen of Monro
- foramen of Luschka
- foramen of Magendie
- foramen ovale
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Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept
In the foetal heart, blood bypasses the lungs through an opening in the interatrial septum.
Step 2: The foetal opening
This opening is the foramen ovale. After birth it closes and leaves a shallow depression called the fossa ovalis.
Step 3: Compare the options
The foramina of Monro, Luschka and Magendie are openings in the brain ventricles and have nothing to do with the heart.
Final Answer:
The fossa ovalis is the remnant of the foramen ovale. \[ \boxed{\text{(D) }\text{foramen ovale}} \]
In the foetal heart, blood bypasses the lungs through an opening in the interatrial septum.
Step 2: The foetal opening
This opening is the foramen ovale. After birth it closes and leaves a shallow depression called the fossa ovalis.
Step 3: Compare the options
The foramina of Monro, Luschka and Magendie are openings in the brain ventricles and have nothing to do with the heart.
Final Answer:
The fossa ovalis is the remnant of the foramen ovale. \[ \boxed{\text{(D) }\text{foramen ovale}} \]
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