The functions of amniotic fluid are?

AIIMS Raipur NO - 2017 (Shift-1)

Obstetrics & Gynaecology

Easy

Appeared in: AIIMS Raipur NO - 2017 (Shift-1)

Explanation

The primary organ for fetal nutrition is the placenta, which facilitates the transfer of all necessary nutrients from the mother's circulation to the fetus.
While the fetus regularly swallows amniotic fluid, this fluid is composed of 98-99% water with only minimal amounts of proteins, glucose, and electrolytes.
The nutritional contribution of amniotic fluid is considered negligible and is not its primary function.

Option A: This is a correct function. The amniotic fluid acts as a natural cushion or shock absorber, protecting the fetus from external trauma or sudden movements of the mother.
Option B: This is a correct function. The fluid insulates the fetus and maintains a constant, warm temperature necessary for stable development.
Option D: This is a correct function. The fluid provides a buoyant environment that prevents compression of the umbilical cord, ensuring that the vital lifeline of blood, oxygen, and nutrients from the placenta to the fetus remains open.

Visual 1: Diagram - An illustration showing a fetus inside the uterus, clearly labeling the amniotic sac, amniotic fluid, fetus, placenta, and umbilical cord. This helps visualize the relationship between these structures and understand how the fluid surrounds and protects the fetus while the placenta provides nourishment.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain This question tests the knowledge of the primary functions of amniotic fluid during pregnancy as background academic context rather than a clinical decision trigger.
The volume of amniotic fluid is an important indicator of fetal well-being. A nurse may assist in measuring the Amniotic Fluid Index (AFI) during an ultrasound.
Too little fluid (oligohydramnios) can indicate problems with the fetal kidneys or placenta and may lead to cord compression or poor lung development.
Too much fluid (polyhydramnios) can be associated with maternal diabetes, fetal gastrointestinal blockages, or problems with fetal swallowing.

How to Approach the Question

First, read the question stem carefully: 'The functions of amniotic fluid are?'. This asks for correct functions.
Next, evaluate each option based on your knowledge of fetal development.
Analyze Option A: Protection from injury is a well-known function (shock absorber).
Analyze Option B: Temperature maintenance is another key function.
Analyze Option C: Providing nutrients. Recall that the placenta is the primary organ for nutrient exchange. While the fetus swallows the fluid, it's not the main source of nutrition.
Analyze Option D: Protecting the umbilical cord from compression is a critical function.

Concept Tested & Keywords

Concept Tested: This question tests the knowledge of the primary functions of amniotic fluid during pregnancy.
Stem keywords: functions, amniotic fluid
Lead-in keywords: are
Negative lead-in flag: The question asks for the functions, but the correct answer is the option that is NOT a primary function, making it an implicit 'except' question.

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