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bursae |
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Bursae A closed sac lined with a synovial membrane and filled with fluid, usually found in areas subject to friction, such as where a tendon passes over a bone. Mentioned in: Joint Fluid Analysis bursa [bur′sə] pl. bursae Etymology: Gk, byrsa, wineskin 1 a fibrous sac between certain tendons and the bones beneath them. Lined with a synovial membrane that secretes synovial fluid, the bursa acts as a small cushion that allows the tendon to move over the bone as it contracts and relaxes. See also adventitious bursa, bursa of Achilles, olecranon bursa, prepatellar bursa. 2 a sac or closed cavity. See also omental bursa, pharyngeal bursa. bursal, adj. bursae (burˑ·sā), n.pl membrane-lined sacs containing synovial fluid, usually found in and around joints. Bursae provide protective cushioning and lubrication. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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