shaven-beard appearance

(sha’ven-bérd). The appearance of the intestinal glands in typhoid fever, being dark colored, with fine white mark- See tsutsugamushi dis- ings. sheath (shéth) [L. vagi’na]. A tubular body inclosing or surrounding some organ. adventitial s., a structure within the brain which separates the extra and the intra-adventitial spaces id s., the delicate membrane between the dural and ‘pial she sheath of the optic nerve. capillary s., all of a lymph-channel surrounding a capillary. chor 8., the sheath of the notochord. crural s. Same as femoral s. dentinal s., the structure which lines the dentinal canals. dural s., the external investment of the optic nerve. femoral the fascial envelop of the femoral ve els. Β. of Henle, the envelop of a nerve-fiber outside of the neurilemma. lamellar s., the perineurium. Mauthner’s s., the double granular protoplasmic sac or layer, marked with lengthwise striz, beneath Schwann’s sheath. It incloses the myelin. medullary s., the tube of myelin that surrounds the axis-cylinder. Neumann's s’s, the walls of the dentinal tubules. notochordal s., an elastic sheath surrounding the notochord. Called also elastic a extern a. 8. of the optic nerve, the envelops that surround the optic nerve, formed by extension of the membranes of the brain. perinephric s., the sheath of fascia investing the kidney. per i vascular s., a lymphatic organ which surrounds some of the blood-ve els of the brain. pial s., an extension of the pia which partly surrounds the optic nerve. primitive s., the neurilémma. 8. of the rectus, the sheath inclosing the rectus muscle, formed by splitting of the tendon of the internal oblique muscle. root-s., the epithelial sheath of the root of the embryonic tooth. Scarpa’s s., the crem a steric fascia. Schwalbe’s s., the thin envelop of an elastic fiber. 8s. of Schwann, the neurilemma. synovial s., the membrane which lines a bony e through which a tendon pa es. tangential s., the fibro cellular sheath inclosing the carotid arteries. sheep-pox (shép’poks). A contagious disease of sheep analogous to or perhaps identical with small-pox, or kine-pox. Called also ovinta. sheep-scab (shép’skab). See under scab.