Flagellum
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A flagellum is a hair-like appendage that protrudes from certain plant and animal sperm cells, from fungal spores, and from a wide range of microorganisms to provide motility. Many protists with flage
SEM image of flagellated eukaryote Chlamydomonas sp. (10000×)
Longitudinal section through the flagella area in Chlamydomonas reinhardtii. In the cell apex is the basal body that is the anchoring site for a flagellum. Basal bodies originate from and have a substructure similar to that of centrioles, with nine peripheral microtubule triplets (see structure at bottom center of image).
The "9+2" structure is visible in this cross-section micrograph of an axoneme.
Multiple flagella in lophotrichous arrangement on surface of Helicobacter pylori
Sperm
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Sperm is the male reproductive cell, or gamete, in anisogamous forms of sexual reproduction. Sperm cells contribute approximately half of the nuclear genetic information to the diploid offspring. Anim
Flagellum
…A flagellum (; pl.: flagella) (Latin for 'whip' or 'scourge') is a hair-like appendage that protrudes from certain plant and animal sperm cells, from fungal spores (zoospores), and from a wide range of microorganisms to provide motility. Many protists with flagella are known as flagellates…
Motile sperm cell attempting to penetrate an ovum's coating to fertilize it.
Electron micrograph of human spermatozoa magnified 3140 times.
Human sperm stained for semen quality testing