Semen is predominantly composed of which component?

Semen is predominantly composed of fluid, and the best estimation for the proportion of fluid in semen is typically around 95%. This high fluid content includes seminal plasma, which carries nutrients and provides a medium for sperm to travel. The fluid serves several vital functions, including aiding in the mobility of sperm and providing a protective environment.

In contrast, the spermatozoa, or sperm cells, make up a much smaller percentage of the total volume of semen, typically around 5% to 10%. Therefore, while it’s correct to say that semen is made primarily of fluid, stating that it constitutes 95% of the total volume reflects a more accurate understanding of its composition. This distinction is crucial for understanding the biological function and characteristics of semen in the context of male reproductive health.