A fluid-filled sac that acts as a cushion at a pressure point in the body, often near a joint, where a tendon or muscle crosses bone or other muscles. The important bursae are around the knee, elbow, and shoulder.
An umbrella-like expansion of the cuticle at the posterior end of some male nematodes as in Ancylostomatidae and Metastrongylidae. The bursa is supported by elongated stalks called “rays”. The shape and size of the bursa and the arrangement and size of the rays are used for identification of the nematodes
n. (pl. bursae) a small sac of fibrous tissue that is lined with *synovial membrane and filled with fluid (synovia). Bursae occur where parts move over one another; they help to reduce friction. They are normally formed round joints and in places where ligaments and tendons pass over bones. However, they may be formed in other places in response to unusual pressure or friction.
Natural hollows in the ?brous tissues, lined by smooth cells and containing a little ?uid. They are situated at points where there is much pressure or friction, and their purpose is to allow free movement without stretching or straining the tissues: for example, on the knee-cap or the point of the elbow, and, generally speaking, where one muscle rubs against another or against a bone. They develop also beneath corns and bunions, or where a bone presses on the skin.... bursae
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