bursa


bursa
n.; pl. bursae [L. bursa, purse]
1. Any pouch or sac, a sac-like cavity.
2. A lateral cuticular extension adanal, or surrounding the tail of male nematodes and acanthocephalans that functions as claspers or guides during copulation; has also been applied by various workers to all caudal alae.
3. (ECHINODERMATA: Crinoidea)
In Ophiurida, formed by infoldings of the body wall of the oral disc to either side of the base of each arm, functioning in gas exchange or as bursal slits; see bursa copulatrix.

Online Dictionary of Invertebrate Zoology. . 2005.

Look at other dictionaries:

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  • Bursa — Bur sa, n.; pl. {Burs[ae]}. [L. See {Burse}.] (Anat.) Any sac or saclike cavity; especially, one of the synovial sacs, or small spaces, often lined with synovial membrane, interposed between tendons and bony prominences. [1913 Webster] …   The Collaborative International Dictionary of English

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