| hispid flagella | Eukaryotic flagella with two rows of stiff protrusions (mastigonemes) at right angles to the long axis of the shaft. In hispid flagella, the normal relationship between the direction of flagellar wave propagation and the direction of movement is reversed, a proximal to distal wave pulls the organism forward. (18 Nov 1997) |
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| hispid | Bearing stiff, bristly hairs. (09 Oct 1997) |
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| bacterial flagella | <microbiology> Thin filaments composed of flagellin sub units that are rotated by the basal motor assembly and act as propellors. If rotating anticlockwise (as viewed from the flagellar tip) the bacterium moves in a straight path, if clockwise the bacterium tumbles. (18 Nov 1997) |
| flagella | In bacteria, a whiplike motility appendage present on the surface of some species. Flagella are composed of a protein called flagellin. Bacteria can have a single flagellum, a tuft at one pole, or multiple flagella covering the entire surface. In eukaryotes, flagella are threadlike protoplasmic extensions used to propel flagellates and sperm. Flagella have the same basic structure as cilia but are longer in proportion to the cell bearing them and present in much smaller numbers. (12 Dec 1998) |
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