- 1. SYN: leg. 2. Any anatomical structure resembling a leg; usually (in the plural) a pair of diverging bands or elongated masses. SEE ALSO: limb. [L.]- ampullary crura of semicircular ducts SYN: ampullary membranous limbs of semicircular ducts, under limb.- crura anthelicis SYN: crura of antihelix.- crura antihelicis [TA] SYN: crura of antihelix.- crura of antihelix [TA] two ridges, inferior and superior, bounding the fossa triangularis, by which the antihelix begins at the upper part of the auricle. SYN: crura antihelicis [TA], crura anthelicis, leg of antihelix.- c. breve incudis [TA] SYN: short limb of incus.- c. cerebri [TA] specifically, the massive bundle of corticofugal nerve fibers passing longitudinally on the ventral surface of the midbrain on each side of the midline; it consists of fibers descending from the cortex to the tegmentum of the brainstem, pontine gray matter, and spinal cord. SEE ALSO: cerebral peduncle, basis pedunculi.- c. of clitoris [TA] the continuation on each side of the corpus cavernosum of the clitoris that diverges from the body posteriorly and is attached to the pubic arch. SYN: c. clitoridis [TA].- c. dextrum diaphragmatis [TA] SYN: right c. of diaphragm.- c. dextrum fasciculi atrioventricularis [TA] SYN: right bundle of atrioventricular bundle. SEE ALSO: atrioventricular bundle.- c. fornicis [TA] 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. SYN: c. of fornix [TA], posterior pillar of fornix.- c. of helix [TA] 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). SYN: c. helicis [TA], crista helicis, limb of helix.- c. inferius marginis falciformis hiatus sapheni inferior horn of falciform margin of saphenous opening.- lateral c. limb or leglike portion of a structure, farthest from midline. SYN: c. laterale, lateral limb.- c. laterale SYN: lateral c..- c. laterale cartilaginis alaris majoris [TA] SYN: lateral c. of the major alar cartilage of the nose.- lateral c. of facial canal laterally placed, posteriorly directed second portion of the horizontal part of the facial canal. See horizontal part of facial canal. SYN: lateral c. of horizontal part of the facial canal.- lateral c. of horizontal part of the facial canal SYN: lateral c. of facial canal. See horizontal part of facial canal.- lateral c. of the major alar cartilage of the nose [TA] portion of cartilage extending laterally and posteriorly in a winglike fashion, supporting the wing of the nose and keeping the nostril patent. SYN: c. laterale cartilaginis alaris majoris [TA].- lateral c. of the superficial inguinal ring [TA] portion of the external oblique aponeurosis that passes lateral to the superficial inguinal ring blending into the inguinal ligament and forming the lateral boundary of the ring. SYN: c. laterale anuli inguinalis superficialis [TA].- left c. of diaphragm [TA] the muscular origin of the diaphragm from the upper two or three lumbar vertebrae that ascends to the left of the aorta to reach the central tendon. SYN: c. sinistrum diaphragmatis [TA].- c. longum incudis [TA] SYN: long limb of incus.- medial c. [TA] limb or leglike portion of a structure closest to the midline. SYN: c. mediale [TA], medial limb.- c. mediale [TA] SYN: medial c..- medial c. of facial canal medially placed, anteriorly directed first portion of the horizontal part of the facial canal. See horizontal part of facial canal. SYN: medial c. of the horizontal part of the facial canal.- medial c. of the horizontal part of the facial canal SYN: medial c. of facial canal. See horizontal part of facial canal.- medial c. of major alar cartilage of nose [TA] portion of cartilage that forms the anterioinferior portion of the cartilaginous septum between nostrils. SYN: c. mediale cartilaginis alaris majoris [TA].- medial c. of the superficial inguinal ring [TA] portion of the external oblique aponeurosis which passes medial to the superficial inguinal ring forming the medial boundary of the ring. SYN: c. mediale anuli inguinalis superficialis [TA].- crura membranacea ampullaria ductuum semicircularium [TA] SYN: ampullary membranous limbs of semicircular ducts, under limb.- c. membranaceum commune ductuum semicircularium [TA] SYN: common membranous limb of semicircular ducts.- c. membranaceum simplex ductus semicircularis [TA] SYN: simple membranous limb of semicircular duct.- crura ossea canalium semicircularium SYN: bony limbs of semicircular canals, under limb.- c. of penis [TA] the posterior, tapering portion of the corpus cavernosum penis which diverges from its contralateral partner to be attached to the ischiopubic ramus. SYN: c. penis [TA], c. corporis cavernosi penis.- right c. of diaphragm [TA] 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 esophageal hiatus is a parting of the fibers of the right c. to allow passage of the esophagus. SYN: c. dextrum diaphragmatis [TA].- c. sinistrum diaphragmatis [TA] SYN: left c. of diaphragm.- c. sinistrum fasciculi atrioventricularis SYN: left bundle of atrioventricular bundle. SEE ALSO: atrioventricular bundle.- c. superius marginis falciformis hiatus sapheni SYN: superior horn of falciform margin of saphenous opening.
* * *1) the part of the hind limb between the femur or thigh and the ankle or tarsus: SHANK2) any of various anatomical parts likened to a leg or to a pair of legs: asa) either of the diverging proximal ends of the corpora cavernosab) the tendinous attachments of the diaphragm to the bodies of the lumbar vertebrae forming the sides of the aortic opening often used in pl.c) crura pl the peduncles of the cerebrum called also crura cerebrid) crura pl the peduncles of the cerebellume) crura pl the posterior pillars of the fornix called also crura fornicisf ) (1) a long bony process of the incus that articulates with the stapes also a shorter one projecting from the body of the incus perpendicular to this (2) either of the two bony processes forming the sides of the arch of the stapes
* * *n. (pl. crura)an elongated process or part of a structure. The crus cerebri is one of two symmetrical nerve tracts situated between the medulla oblongata and the cerebral hemispheres.
* * *(krus) gen. cruґris pl. cruґra [L.] 1. [TA] leg: the part of the lower limb from the knee to the ankle. 2. a leglike part.
Medical dictionary. 2011.