Pronunciation: fla-jel'um, -a
Definition: A whiplike locomotory organelle of constant structural arrangement consisting of nine double peripheral microtubules and two single central microtubules; it arises from a deeply staining basal granule, often connected to the nucleus by a fiber, the rhizoplast. Although characteristic of the protozoan class Mastigophora, comparable structures are commonly found in many other groups, in sperm.
[L. dim. of flagrum, a whip]
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