The umbilical cord is protected by

Appeared in: UPPSC 2022

Explanation

Wharton's jelly is a specialized gelatinous connective tissue that is the main component of the umbilical cord matrix.
Its primary function is to provide structural support and cushion the umbilical blood vessels (two arteries and one vein).
This protection prevents compression, kinking, or torsion of the vessels, ensuring a continuous and vital supply of oxygen and nutrients to the fetus.

Option A: Vernix caseosa is a waxy, cheese-like substance that covers and protects the skin of the fetus in utero. It is not a component of the umbilical cord.
Option B: Amniotic fluid provides external cushioning for the fetus and the umbilical cord against outside forces. However, it does not provide the internal structural protection against kinking and compression that Wharton's jelly does.
Option C: Blood substitutes are artificial products designed to carry oxygen in medical situations where biological blood is unavailable or not suitable. They have no anatomical or physiological role in fetal development.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Anatomy and function of the umbilical cord as background academic context rather than a clinical decision trigger.
The integrity of the umbilical cord is a lifeline for the fetus. Any compression can compromise blood flow, leading to fetal hypoxia, distress, brain damage, or death.
Wharton's jelly is the primary natural defense against cord compression. A thin or deficient cord (lacking adequate Wharton's jelly) is a risk factor for adverse perinatal outcomes.
What if? - What if the umbilical cord prolapses (slips down before the baby) during labor? This is a medical emergency. The immediate nursing priority is to manually elevate the presenting fetal part to relieve pressure on the cord and restore blood flow, while preparing for an emergency Cesarean section.

How to Approach the Question

This is a factual recall question based on anatomy and physiology in obstetrics.
First, identify the keywords in the question: 'umbilical cord' and 'protected'. This directs you to think about the specific structures that make up the cord.
Evaluate each option's anatomical location and function.
Recall that the umbilical cord contains blood vessels embedded within a protective matrix.
Differentiate between the internal protective substance (Wharton's jelly) and the external protective environment (amniotic fluid).
Eliminate 'Vernix caseosa' as it is on the fetal skin, and 'Blood substitutes' as it is an unrelated medical product.

Concept Tested & Keywords

QavopCFGPVcQnCBb0mkbuT

E6 Histology Inderbir 11e p. 4-6

E6 Midwifery Obstetrics and Gynecology Nursing Sandeep Kaur p. 53-64

E6 Anatomy Grays 43e Vol 1 Part 2 p. 12-14

Practise the full UPPSC 2022

Attempt every question from this paper in a timed mock, then review the full solution for each one.