Sperm Selection and Fertilization Process (Based on studies from Stockholm University & Manchester NHS Foundation Trust)
1. Traditional Misconception
- Fastest sperm does not necessarily enter the ovary
2. Scientific Findings
- Ovary has selective receptors
- Allows only the healthiest sperm to enter
- Not necessarily the first or the fastest
3. Study Details Researchers:
Stockholm University (Sweden) & Manchester NHS Foundation Trust (UK)
Published in: The Royal Society
Debunks the theory:
Fastest sperm does not always penetrate the ovary
Selection process:
- Sperm selected by female reproductive cells
- Based on chemical attraction
John Fitzpatrick (Associate Professor, Stockholm University):
- "Human eggs release chemicals called chemo-attractants that draw sperm towards the unfertilized egg."
4. Sperm Journey
- Millions of sperm reach the ovary
- Only the best are allowed to enter
5. Fertilization Process
- If a healthy sperm meets the egg (ovum):
- Process of creating new life begins
- If fertilization does not occur:
- Egg’s journey ends in the uterus
- Egg is broken down and expelled through menstruation
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