Which of the following hormones initiate parturition

Options

A. ACTH,hCG,oxytocin
B. ACTH,corticosteroid, oxytocin
C. Corticosteroid, ACTH protaglandin
D. ACTH, progesterone hCG.

Answer

To solve the question "Which of the following hormones initiate parturition?", we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Parturition**:
- Parturition refers to the process of giving birth. It is a complex physiological process that involves various hormones.

2. **Identifying Key Hormones**:
- The main hormones involved in initiating parturition include oxytocin and corticosteroids (specifically cortisol).

3. **Analyzing the Options**:
- The options provided are:
- A) ACTH, HCG, oxytocin
- B) ACTH, corticosteroid, oxytocin
- C) Corticosteroid, ACTH, prostaglandins
- D) ACTH, progesterone, HCG

4. **Understanding Hormonal Roles**:
- **ACTH (Adrenocorticotropic Hormone)**: Stimulates the adrenal glands to release cortisol.
- **Corticosteroids (Cortisol)**: Help in the maturation of the fetus and play a role in the initiation of labor.
- **Oxytocin**: Responsible for uterine contractions that help in the delivery process.

5. **Selecting the Correct Option**:
- From the analysis, option B (ACTH, corticosteroid, oxytocin) includes both the corticosteroids and oxytocin, which are crucial for initiating parturition.

6. **Conclusion**:
- Therefore, the correct answer is option B: ACTH, corticosteroid, and oxytocin.