Sometimes the labor pains are less and uterine contraction have to be induced . What do you think the doctors inject to facilitate delivery?

Options

A. Progesterone and estrogen hormones
B. Oxytocin /Pitocin
C. FSH and LH
D. Relaxin

Answer

To answer the question about what doctors inject to facilitate delivery when labor pains are less and uterine contractions need to be induced, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Labor and Contractions**:
- During labor, the body naturally produces hormones that stimulate uterine contractions, which are essential for childbirth.

2. **Role of the Fetus and Placenta**:
- The fully developed fetus and placenta send signals to the mother's body, particularly to the maternal pituitary gland, to initiate labor.

3. **Hormonal Response**:
- The maternal pituitary gland responds to these signals by secreting hormones that promote uterine contractions.

4. **Identifying the Key Hormone**:
- The primary hormone responsible for stimulating uterine contractions is **oxytocin**. It is often referred to as the "birth hormone."

5. **Mechanism of Action**:
- Oxytocin acts on the myometrium (the muscular layer of the uterus), causing it to contract. This contraction further stimulates the release of more oxytocin, creating a positive feedback loop that intensifies labor.

6. **Medical Intervention**:
- In cases where labor is not progressing naturally, doctors may inject oxytocin (or a synthetic variant known as Pitocin) to induce or enhance contractions.

7. **Conclusion**:
- Therefore, the correct answer to the question is that doctors inject **oxytocin** to facilitate delivery when labor pains are insufficient.