State from where do the signals for parturition originate in human females.

Explanation

### Step-by-Step Solution:

1. **Understanding Parturition**: Parturition refers to the process of childbirth or delivery of the fetus.

2. **Gestational Period**: In humans, the gestational period lasts approximately nine months, during which the fetus and placenta develop fully.

3. **Signals for Parturition**: The signals that initiate parturition originate from the fully developed fetus and placenta. As the fetus grows and matures, it sends biochemical signals to the mother's body.

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