Which of these statements about decidua is false?

Options

A. Decidua cells are enlarged, vacuolated endometrial cells filled with glycogen and lipids.
B. Decidua parietalis refers to the part of the decidua which gives rise to maternal part
C. Decidua capsularis refers to the part of the decidua which overlies the embryo and separates it from the uterine cavity.
D. These cells are called decidua decidua because they are shed off during parturition .

Answer

To determine which statement about decidua is false, we will analyze each statement step by step.

### Step-by-Step Solution:

1. **Understanding Decidua**:
- Decidua is the modified mucosal lining of the uterus, specifically the endometrium, that prepares for pregnancy.
- This process is known as decidualization and is influenced by the hormone progesterone.

2. **Analyzing the Statements**:
- **Statement 1**: "Decidual cells are enlarged and have vacuolated endometrial cells filled with glycogen and lipids."
- **Analysis**: This statement is true. During decidualization, endometrial cells enlarge and accumulate glycogen and lipids to support the embryo.

- **Statement 2**: "Decidua Parietalis refers to the part of the decidua which gives rise to the maternal part."
- **Analysis**: This statement is misleading. The decidua parietalis is indeed a part of the decidua, but it does not specifically refer to the maternal part that gives rise to the placenta. Instead, it refers to the part of the decidua that lines the uterine cavity and does not contribute to the placental structure.

- **Statement 3**: "Decidua Capsularis refers to the part of the decidua which overlies the embryo and separates it from the uterine cavity."
- **Analysis**: This statement is true. The decidua capsularis indeed covers the embryo and separates it from the uterine cavity.

- **Statement 4**: "These cells are called decidua because they are shed off during parturition."
- **Analysis**: This statement is also true. The term "decidua" comes from the Latin word meaning "to fall away," which refers to the shedding of this tissue during childbirth.

3. **Conclusion**:
- The false statement among the options provided is **Statement 2**. It incorrectly describes the role of the decidua parietalis.

### Final Answer:
The false statement about decidua is **Statement 2**.

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