a leg; usually

(in the plural, crura) a pair of diverging bands or elongated ma es, c. anthel'- icis, crus of the antihelix, one of two ridges, inferior and superior, bounding the fo a triangular is, by which the antihelix begins at the upper part of the auricle, c. bre've, the short proce of the incus, fitting into a depre ion (fo a incudis) in the epitympanic rece , c. cer'ebri, pedunculus cerebri [BNA]. c. clit or'- idis [BNA], the continuation on each side of the corpus caver no sum of the clitoris which diverges from the body posteriorly and is attached to the pubic arch. c. cor'por is caver no'si pe'nis, c. penis, c. for'nicis [BNA], crus of the fornix, posterior pillar of the fornix, one of two flattened bands diverging from the posterior portion of the body and descending behind the optic thalami to enter the inferior (descending) horn of each lateral ventricle, spreading out on the surface of the hippocampus to form the alveus, and terminating in the hippocampal fimbria, chel'icis, limb of the helix, a transverse ridge continuing backward the helix of the auricle, dividing the concha into an upper portion, cymba, and a lower portion, cavum concha. c. inter me'dium, middle pillar of the diaphragm; the fibrous attachment of the diaphragm to the lateral surface of the body of the second lumbar vertebra on either side. c. later a'le, external pillar of the diaphragm; the fibrous attachment of the diaphragm to the arcuate ligament (arcus lumbocostalis) on either side. c. lon'gum, the long proce of the incus terminating in the proce us lenticular is or os orbiculare. c. media'le, internal pillar of the diaphragm; the fibrous attachment of the diaphragm to the anterolateral surface of the bodies of the first three or four lumbar vertebra on the right side and of the first two or three on the left when the crura or pillars of the diaphragm are spoken of, without further qualification, these medial, or internal, crura are meant, c. pe'nis, the posterior attached portion of the corpus caver no sum penis.