Category: Reproductive biology

Globally, millions of sperm cells are released during ejaculation, yet only a single one successfully fertilizes an egg. This remarkable feat is made possible by a specific set of enzymes contained within the sperm's head, which are designed to dissolve the egg's formidable protective coatings and facilitate the union of genetic material. The release of these enzymes is a tightly regulated process essential for successful conception.

Human seminal fluid is a high-fructose environment, with average concentrations around 15 mM—more than 300 times higher than fructose levels typically found in blood. Understanding the specific sugars, and exactly how much sugar is in seminal fluid, is key to comprehending male reproductive health and sperm function.