| crus anthelicis | One of two ridges, inferior and superior, bounding the fossa triangularis, by which the antihelix begins at the upper part of the auricle. Synonym: crus anthelicis, leg of antihelix. (05 Mar 2000) |
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| crus breve incudis | The short crus of incus; the process of the incus that fits into a depression (fossa incudis) in the epitympanic recess. Synonym: crus breve incudis. (05 Mar 2000) |
| crus cerebri | Specifically, the massive bundle of corticofugal nerve fibres passing longitudinally on the ventral surface of the midbrain on each side of the midline; it consists of fibres descending from the cortex to the tegmentum of the brainstem, pontine gray matter, and spinal cord. See: cerebral peduncle, basis pedunculi. (05 Mar 2000) |
| crus clitoridis | The continuation on each side of the corpus cavernosum of the clitoris which diverges from the body posteriorly and is attached to the pubic arch. Synonym: crus clitoridis. (05 Mar 2000) |
| crus corporis cavernosi penis | The posterior, tapering portion of the corpus cavernosum penis which diverges from its contralateral partner to be attached to the ischiopubic ramus. Synonym: crus penis, crus corporis cavernosi penis. (05 Mar 2000) |
| crus dextrum diaphragmatis | The muscular origin of the diaphragm from the bodies of the upper three or four lumbar vertebrae that passes upward to the right of the aorta toward the central tendon; the oesophageal hiatus is a parting of the fibres of the right crus to allow passage of the oesophagus. Synonym: crus dextrum diaphragmatis. (05 Mar 2000) |
| crus dextrum fasciculi atrioventricularis | The right leg or branch of the atrioventricular bundle which diverges from the left crus just below the membranous portion of the interventricular septum to descend the septal wall of the right ventricle and ramify beneath the endocardium. Synonym: crus dextrum fasciculi atrioventricularis. (05 Mar 2000) |
| crus fornicis | That part of the fornix that rises in a forward curve behind the thalamus to continue forward as the body for fornix ventral to the corpus callosum. Synonym: crus of fornix, posterior pillar of fornix. (05 Mar 2000) |
| crus helicis | A transverse ridge continuing backward from the helix of the auricle, dividing the concha into an upper portion (cymba) and a lower portion (cavity of concha). Synonym: crus helicis, crista helicis, limb of helix. (05 Mar 2000) |
| crus I | The part of the superior surface of the cerebellar hemisphere lying rostral to the horizontal fissure, and adjoining the folium of the vermis. Synonym: lobulus semilunaris superior, anterior lunate lobule, crus I. (05 Mar 2000) |
| crus II | The part of the superior surface of the cerebellar hemisphere lying behind the horizontal fissure. Synonym: lobulus semilunaris inferior, crus II, posterior lunate lobule. (05 Mar 2000) |
| crus laterale | Limb or leg-like portion of a structure, farthest from midline. Synonym: crus laterale, lateral limb. (05 Mar 2000) |
| crus laterale anuli inguinalis superficialis | Portion of the external oblique aponeurosis which passes lateral to the superficial inguinal ring blending into the inguinal ligament and forming the lateral boundary of the ring. Synonym: crus laterale anuli inguinalis superficialis. (05 Mar 2000) |
| crus laterale cartilaginis alaris majoris | Portion of cartilage extending laterally and posteriorly in a wing-like fashion, supporting the wing of the nose and keeping the nostril patent. Synonym: crus laterale cartilaginis alaris majoris. (05 Mar 2000) |
| crus longum incudis | The process of the incus that articulates with the stapes. Synonym: crus longum incudis. (05 Mar 2000) |