OPSC OAS 2019 PrelimsScience & TechnologyQuestion 2
Solved previous year question from the OPSC OAS/OCS 2019 Preliminary Examination (General Studies), with the official answer key and a detailed explanation.
Question
Structure connecting the foetus to placenta is:
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Answer & Explanation
Correct answer: (A) Umbilical cord
The umbilical cord is the tubular structure that links the fetus directly to the placenta. It contains two arteries and one vein within a protective gelatinous layer and serves as the lifeline for transporting oxygen and nutrients to the fetus and carrying waste products away.
- Amnion is the inner fetal membrane that forms the amniotic sac around the fetus—not a direct connector to the placenta
- Bulbourethral gland is part of the male reproductive system with no role in pregnancy.
- Chorion is the outer fetal membrane that contributes to placenta formation but does not physically connect the fetus to the placenta
- Therefore, the structure directly connecting the fetus to the placenta is the umbilical cord.
