In amniocentesis, the embryonic cells are obtained from

Options

A. amnion
B. amniotic fluid
C. placenta
D. embryonic disc

Answer

**Step-by-Step Solution:**

1. **Understanding Amniocentesis**: Amniocentesis is a medical procedure used to collect amniotic fluid from the amniotic sac surrounding a fetus. This fluid contains fetal cells and is used for genetic testing.

2. **Identifying the Source of Cells**: The amniotic fluid is crucial because it contains cells shed by the fetus. These cells can be analyzed for chromosomal abnormalities and genetic disorders.

3. **Analyzing the Options**:
- **Amnion**: This is the membrane that encloses the amniotic fluid and the fetus, but it does not contain the cells directly.
- **Amniotic Fluid**: This is the fluid that surrounds the fetus and contains the fetal cells, making it the correct answer.
- **Placenta**: This organ connects the fetus to the mother, but it is not the source of the cells obtained in amniocentesis.
- **Embryonic Disc**: This is a structure within the embryo, but it is not the source of the cells collected in amniocentesis.

4. **Conclusion**: The correct answer is that embryonic cells are obtained from the **amniotic fluid** during amniocentesis.

**Final Answer**: The embryonic cells are obtained from **amniotic fluid**.

---