Which of the following hormone stimulates milk production and secretion and participates in control of reproduction ?

Options

A. Oxytocin
B. Prolactin
C. HCG
D. Dopamine

Answer

To solve the question regarding which hormone stimulates milk production and secretion while also participating in the control of reproduction, we can analyze the options provided.

### Step-by-Step Solution:

1. **Identify the Hormones:**
- The options given are:
- Oxytocin
- Prolactin
- HCG (Human Chorionic Gonadotropin)
- Dopamine

2. **Analyze Each Hormone:**
- **Oxytocin:**
- Known as the "milk ejection reflex" hormone. It helps in the release of milk that is already present in the breast during breastfeeding but does not stimulate milk production itself.
- **Prolactin:**
- This hormone is crucial for the production and secretion of milk. It stimulates the mammary glands to produce milk and is essential during pregnancy for the development of breast tissue.
- **HCG:**
- This hormone is primarily involved in maintaining pregnancy and is produced by the placenta. It does not have a direct role in milk production.
- **Dopamine:**
- A neurotransmitter that plays a role in the nervous system but is not involved in milk production or secretion.

3. **Conclusion:**
- Among the options, **Prolactin** is the hormone that specifically stimulates milk production and secretion, and it also plays a role in reproductive health by preparing the body for breastfeeding.

### Final Answer:
The hormone that stimulates milk production and secretion and participates in the control of reproduction is **Prolactin**.

---