Hormone secreted during child birth is

Options

A. Thyroxine
B. Relaxin
C. Progesterone
D. Glucocorticoid.

Answer

To answer the question about the hormone secreted during childbirth, we will analyze the options provided and identify the correct one.

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for the hormone that is specifically secreted during childbirth.

2. **Analyze the Options**:
- **Thyroxin**: This hormone is produced by the thyroid gland and is primarily involved in regulating metabolism. It is not directly related to childbirth. Therefore, this option is incorrect.

- **Relaxin**: This hormone is produced by the placenta and is released in significant amounts when childbirth is imminent. Its primary function is to relax the cervix and pelvis, facilitating the birth process. This makes relaxin a strong candidate for the hormone secreted during childbirth.

- **Progesterone**: Known as the pregnancy hormone, progesterone plays a crucial role in maintaining the uterine lining during pregnancy. However, it is not directly involved in the process of childbirth itself. Thus, this option is also incorrect.

- **Glucocorticoid**: This hormone is secreted by the adrenal cortex and is involved in carbohydrate metabolism and stress responses. It does not play a direct role in childbirth, making this option incorrect as well.

3. **Conclusion**: After analyzing all the options, the correct answer is **Relaxin**, as it is the hormone that is secreted during childbirth to aid in the dilation of the cervix.

### Final Answer:
The hormone secreted during childbirth is **Relaxin**.

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