Which one of the following hormones helps in relaxation of pubic symphysis during child birth ?

Options

A. Oestrogen
B. Progesterone
C. LTH
D. Relaxin

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks which hormone is responsible for the relaxation of the pubic symphysis during childbirth.

2. **Identifying Relevant Hormones**: During pregnancy, several hormones are involved in the process of childbirth. The key hormones to consider are oxytocin, relaxin, estrogen, and progesterone.

3. **Role of Oxytocin**: Oxytocin is known for its role in stimulating uterine contractions during labor. However, it does not specifically aid in the relaxation of the pubic symphysis.

4. **Role of Relaxin**: Relaxin is a hormone that is secreted by the ovaries during pregnancy. Its primary function is to relax the ligaments in the pelvis and soften the cervix, which is crucial for childbirth.

5. **Conclusion**: Since the question specifically asks about the relaxation of the pubic symphysis, the hormone responsible for this action is relaxin. Therefore, the correct answer is relaxin.

6. **Final Answer**: The hormone that helps in the relaxation of the pubic symphysis during childbirth is **Relaxin**.

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