What stimulates pituitary to release the hormone responsible to, parturition? Name the hormone.

Explanation

### Step-by-Step Solution:

1. **Understanding Parturition**:
- Parturition is the process of giving birth, which involves the expulsion of a fully formed young one from the mother. In humans, this typically occurs after a gestation period of about 280 days.

2. **Initiation of Parturition**:
- The process of parturition is initiated by signals originating from the fetus. As the fetus develops and reaches full term, it sends signals that trigger the onset of labor.

...