**Question:** True regarding umbilical cord is(2018)

A. It is formed from the intermediate mesoderm during embryonic development.
B. It connects the placenta to the uterus.
C. It carries oxygenated blood from the placenta to the fetus.
D. The umbilical cord is a single vessel connecting the fetus to the placenta.

**Correct Answer:** C. It carries oxygenated blood from the placenta to the fetus.

**Core Concept:** Umbilical cord is an essential structure during pregnancy, connecting the fetus to the placenta, which is responsible for supplying nutrients, oxygen, and waste removal.

**Why the Correct Answer is Right:** The umbilical cord is indeed formed from the intermediate mesoderm during embryonic development (Option A). However, the primary function of the umbilical cord is to transport oxygenated blood from the placenta to the fetus, ensuring adequate oxygen supply, and deoxygenated blood from the fetus back to the placenta. This process is essential for fetal growth and development (Option C).

**Why Each Wrong Option is Incorrect:**

Option B is partially correct as it connects the placenta to the fetus, but it fails to mention the crucial role of the umbilical cord in transporting blood between the placenta and fetus.

Option D is incorrect because the umbilical cord is not a single vessel but a complex structure consisting of a central vein, arteries, and a fibrous stalk.

**Clinical Pearl:** Understanding the anatomy and function of the umbilical cord is essential for obstetricians and healthcare professionals involved in prenatal care, as it helps ensure safe management of pregnancies, deliveries, and postnatal care.