Which of the following layer of uterus exhibits strong contraction during delivery of the bady ?

Options

A. Mesometrium
B. Myometrium
C. Endometrium
D. Perimetrium

Answer

To solve the question regarding which layer of the uterus exhibits strong contractions during the delivery of a baby, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Layers of the Uterus**:
- The uterus has three main layers:
- **Perimetrium**: The outermost layer.
- **Myometrium**: The middle layer, which is muscular.
- **Endometrium**: The innermost layer, which is the lining of the uterus.

2. **Identify the Function of Each Layer**:
- The **Perimetrium** serves as a protective outer layer.
- The **Endometrium** is involved in the implantation of the embryo and the menstrual cycle.
- The **Myometrium** is composed of smooth muscle and is responsible for the contractions of the uterus.

3. **Relate to Childbirth (Parturition)**:
- During childbirth, strong contractions are necessary to help push the baby out of the uterus.
- These contractions are primarily due to the action of the **myometrium**.

4. **Hormonal Influence**:
- The hormone **oxytocin**, released from the maternal pituitary gland, stimulates the myometrium to contract strongly during labor.

5. **Conclusion**:
- Based on the functions and roles of the different layers, the layer of the uterus that exhibits strong contractions during the delivery of the baby is the **Myometrium**.

### Final Answer:
The correct option is **Myometrium** (Option 2).

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