Question:
Statement I: In the foetal heart of human beings, the interatrial septum has a pore called foramen Manro.
Statement II: A fibrous strand, known as ligamentum arteriosum, is present at the point of contact of the systemic and pulmonary arches in the human heart.
Statement I: In the foetal heart of human beings, the interatrial septum has a pore called foramen Manro.
Statement II: A fibrous strand, known as ligamentum arteriosum, is present at the point of contact of the systemic and pulmonary arches in the human heart.
Statement II: A fibrous strand, known as ligamentum arteriosum, is present at the point of contact of the systemic and pulmonary arches in the human heart.
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The foramen ovale allows blood to bypass the fetal lungs, and the ductus arteriosus later forms the ligamentum arteriosum.
Updated On: Mar 12, 2025
- Both statements I and II are true.
- Both statements I and II are false.
- Statement I is true, but II is false.
- Statement I is false, but II is true.
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The Correct Option is D
Solution and Explanation
Step 1: Understanding the Fetal Circulatory Adaptations
- Statement I is incorrect: The correct name of the fetal heart opening is foramen ovale, not foramen Manro.
- Statement II is correct: The ligamentum arteriosum is a remnant of the ductus arteriosus, connecting the pulmonary and systemic circulation.
- Statement I is incorrect: The correct name of the fetal heart opening is foramen ovale, not foramen Manro.
- Statement II is correct: The ligamentum arteriosum is a remnant of the ductus arteriosus, connecting the pulmonary and systemic circulation.
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