The expulsion of completely developed foetus from the uterus is called gestation

Answer

### Step-by-Step Solution

1. **Understanding the Terms**: The statement claims that the expulsion of a completely developed fetus from the uterus is called gestation. First, we need to clarify what gestation means.

2. **Definition of Gestation**: Gestation refers to the period of development of the fetus inside the mother's womb, starting from fertilization until birth. This period lasts approximately 280 days in humans.

3. **Clarifying the Process**: The process of expelling the fetus from the uterus is not gestation but is known as parturition. Parturition is the act of giving birth.

4. **Hormonal Influence**: During parturition, specific hormones play a crucial role. Oxytocin is one of the key hormones that helps in the contraction of the uterus, facilitating the birth process.

5. **Conclusion**: Therefore, the original statement is incorrect. The correct term for the expulsion of a fully developed fetus is parturition, while gestation refers to the entire period of fetal development.