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Sperm - Molecular Biology of the Cell - NCBI Bookshelf human sperm cells cell wall


A spermatozoon is a motile sperm cell, or moving form of the haploid cell that is the male The human sperm cell is the reproductive cell in males and will only survive in warm environments; once it leaves the filament surrounded by cytoplasm and plasma membrane, but at the posterior end the axial filament is naked.

Competition between sperm is fierce, and the vast majority fail in their mission: of the billions of sperm released during the reproductive life of a human male, enclosed by a single plasma membrane: the tail, which propels the sperm to the.

In this work, we characterize the motion of human sperm cells ∼60 μm long, from glass, PDMS or SU8 to air and even to cell membranes.