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Updated: Jan 25, 2026
08:58
Fluorimetric Techniques for the Assessment of Sperm Membranes
Published on: November 28, 2018
14.2K
Sperm navigation mechanisms.
Ceska Gynekologie
|January 23, 2026
Summary
Sperm use rheotaxis, thermotaxis, and chemotaxis to navigate towards the egg. Understanding these sperm navigation mechanisms is key for effective sperm selection in fertility treatments.
Area of Science:
- Reproductive Biology
- Sperm Physiology
- Fertilization Mechanisms
Background:
- Sperm navigation is crucial for successful fertilization.
- Understanding sperm selection principles is vital for assisted reproductive technologies.
Purpose of the Study:
- To provide an overview of current knowledge on sperm navigation.
- To explore the physiological process from ejaculation to fertilization.
Main Methods:
- Literature search of PubMed database up to June 2025.
- Keywords: "sperm navigation," "fertilization," "chemoattractants".
Main Results:
- Human in vivo sperm navigation remains unclear.
- Three navigation systems identified: rheotaxis (fluid flow), thermotaxis (temperature), and chemotaxis (chemical signals).
- These systems guide sperm over varying distances towards the oocyte.
Conclusions:
- Effective laboratory sperm selection requires knowledge of in vivo human sperm navigation.
- Sperm microinjection techniques necessitate careful sperm selection prior to fertilization.
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