## **Core Concept**
The placenta is a vital organ that develops in the uterus during pregnancy, playing a crucial role in providing oxygen and nutrients to the fetus and removing waste products. Its weight is an important indicator of its function and fetal growth. At term, the placenta's weight is approximately one-sixth of the fetal weight.

## **Why the Correct Answer is Right**
The correct answer, , indicates that the weight of the placenta at term is about 1/6th of the fetal body weight. This ratio is crucial for fetal growth and development, as it ensures the placenta can support the fetus's metabolic needs. Studies have shown that a placenta weighing around 470 grams (or approximately 1/6 of a 2.8 kg or 2800 gm fetus) is typical at term.

## **Why Each Wrong Option is Incorrect**
- **Option A:** . This option suggests the placenta weighs about 100 grams, which is significantly underweight for a term placenta, indicating potential placental insufficiency.
- **Option B:** . This option implies the placenta weighs about 1/10th of the fetal body weight, which is lower than the expected ratio.
- **Option D:** . This option indicates the placenta weighs about 1/4th of the fetal body weight, which is higher than the expected ratio and might suggest placental abnormalities.

## **Clinical Pearl / High-Yield Fact**
A key clinical pearl is that the normal term placenta weighs approximately 470 grams and measures about 15-20 cm in diameter, 2-3 cm in thickness. A placenta that is significantly smaller or larger than expected may indicate underlying issues, such as intrauterine growth restriction (IUGR) or gestational diabetes.

## **Correct Answer:** .