columella

(kol-u-mel’ah) [1,. 1. A little column. 2. In molds, the central axis of the spore-case, around which the spores are arranged. ¢. coch’- lew, the modiolus of the cochlea. c. for’nicis, the anterior pillars of the fornix. c. na’si, the septum of the nose. column (kol’um) [L. colum’na]. _ A pillar or pillar like part. c’s of abdominal ring, thickened fibers of the aponeurosis of the external oblique muscle around the external abdominal ring. anterior c., a layer of white matter on either half of the spinal cord between the ventral horn and the anterior median fi ure. anterolateral c., white matter between the anterior median fi ure and the dorsal horn of gray matter of the spinal cord. c’s of Bertin (colum’na bertin’i), inward extensions of the cortical structure of the kidney, between the malpighian pyramids. 6. of Burdach, the postero-external column. Clarke’s c., a tract of nerve-cells occupying the inner angle of the dorsal horn of gray matter of the spinal cord. direct cerebellar c., a tract outside of the lateral pyramidal tract. dorc. Same as posterior c. emamel-c., any member of the series of fibers which make up the enamel of a tooth. Called also enumel-rod. fat- c's [L. colum'’na adipo’sa), columns of fatty ti ue extending from the cutaneous connective ti ue to the hair-follicles and sweat-glands. Flechsig’s c., Flechsig’s tract. See ¢ract. c. of Goll, the posteromedian column of the spinal cord. c. of Gowers, 2 ma of fibers in front of the direct cerebellar tract. lateral c., a layer of white COMMISSURAL alcoholic debauch. apoplectic c., the stupor which accompanies apoplexy. diabetic c., the coma of fatal cases of diabetes. Ku maul’s c., the coma of diabetic acetonuria. trance-c., lethargic hypnotism. uremic c., lethargic state due to uremia. c.-vigil, stupor with delirium, wakefulne , and semiconsciousne . matter in either half of the spinal cord between ¢omain (ko’ma-in). A product of the action of the posterior horn and nerve-roots and the anterior horn and nerve-roots. c. of Li auer, a slender camphor and iodin on sesame oil: used in tuberculosis. column of white matter between the posterior cornu ggmatose (ko’'mat-ds). Pertaining to or affected and the periphery of the spinal cord. Its fibers arise from the spinal ganglia to pa to higher with coma. levels of the cord. mixed lateral c., the comb disease (kom). See under disease - internal part of the lateral column next the gray Combre’tum sundi’acum. The jungle plant, a substance. c’s of Morgagni, folds of mucous membrane at the anal termination of the rectum. shrub of the Malay States: said to be useful as a cure for the opium habit. muscle-c., 2 bundle of muscle-rods or caskets combustion (kom-bust’yun) [L. comb us/tio]. Burn- filling a muscle compartment. posterior c., a ma of white matter in the spinal cord on either side between the posterior horn and the posterior ing; rapid oxidation with emi ion of heat. spontaneous ¢., the alleged ignition and destruction of the living body of an alcoholic subject. median fi ure. postero-external c., the outer Comby’s sign (kom’béz) [Jules Comby, contempo- and wider portion of the posterior column of the spinal cord. posteromedian c., the middle portion of the dorsal column of the spinal cord. sterovesicular c., the column of Clarke. thke’s c’s, two cartilages at the anterior end of the notochord. rectalc’s. Sameasc’s of Morgagni. respiratory c., the solitary fasciculus. Ο. rary pediatrist in Paris]. See under sign. comedo (kom-e’do), pl. comedo’nes. 1. A_black- head; a plug of dried sebum in an excretory duct of the skin, sometimes containing Dem’ odex solliculo'rum. 2. A skin disease due to the presence of comedones. of Rolando, an eminence on the lateral edge of Comes (ko’méz), pl. com’ites [L. “ companion ᾽Ἴ. the oblong at a. c. of Sertoli, an elongated sustentacular cell in the parietal layer of the seminifer- An artery or vein which accompanies a nerve trunk. ous tubules, holding together the spermatogenic comfrey (kom’fre). See Symphytum. cells. spinal c., the backbone formed by the comma-bacillus (kom’ah-bas-il’us) [pamed from a emblage of the vertebre. c. of Spitzka- Li auer, a group of nerve-fibers of the cord its shape]. The spirillum of Asiatic cholera. See bacillus. in front of and behind the posterior cornua. ggmma-tract (kom’ah-trakt). A comma-shaped Stilling’s c. Same as Clarke's c. Tiirck’s c. 1. The anterior pyramidal tract. 2. The sensory bundles occupying the outer part of the crusta of the cerebral peduncle. c’s of the vagina. See columne vagine. _ ventral c. Same as_ anterior c. vertebral c. See spinal c. vesicular c., a column of nerve-cells tract in the middle of the dor so-external column of the spinal cord. commensal (kom-en’sal) [L. com together + men’sa table]. An organism living on or within another, but not as a parasite: used also adjectively. in the dorsal gray horn of the spinal cord. commensalism (kom-en’sal-izm). Parasitic as so-