单词 | marginal sinus |
释义 | marginal sinus [`mär·jǝn·ǝl `sī·nǝs] ANATOMY 1. One of the small, bilateral sinuses of the dura mater which skirt the edge of the foramen magnum, usually uniting posteriorly to form the occipital sinus. 2. See <<terminal sinus>> EMBRYOLOGY An enlarged venous sinus incompletely encircling the margin of the placenta. |
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