_____________ part of the male gamete helps in swimming inside the uterus

Explanation

**Step-by-Step Solution:**

1. **Understanding the Male Gamete Structure**: The male gamete, or sperm, has several distinct parts: the head, neck, body, and tail.

2. **Identifying the Function of Each Part**:
- **Head**: Contains enzymes that help in breaking down the female reproductive tract.
- **Neck**: Connects the head to the body.
- **Body**: Contains mitochondria, which provide energy necessary for movement.
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