TUBE 



1551 



TUBERCLE 



metallic tube trumpet-shaped at one extremity and 

 red at the other to faciliate its introduction into the 

 ynx, and provided with a perforated collar to which 

 litable material is attached for the purpose of closing 

 aperture of the larynx. T., Collecting. See 

 hide. T., Communicating. See Tubulus, Com- 

 •tnicating. T. -culture. See Culture. T., Den- 

 tinal. See Canal, Dentinal. T., Depaul's {for 

 insufflation), no. instrument similar to Chaussier"s. T., 

 Drainage, a hollow tube of glass, rubber, or other 

 material to be inserted into a wound or cavity to allow 

 of the escape of fluids. T., Draw, the tube which 

 slides within the tube of a microscope. Ts., Egg. See 

 Ts., Ovarian. T., Emmett's Fistula, a trumpet- 

 shaped tube for draining a fistula. T., Enterotomy, 

 an instrument used in establishing an artificial anus, to 

 prevent protrusion of the gut. T., Esbach's, Esbachs 

 albumimeter ; a graduated glass cylinder for estimating 

 the percentage of albumin in urine. T., Esmarch's 

 Elastic, an elastic tube furnished with a hook and 

 chain, and used to render a limb bloodless. T., 

 Esophageal, a soft, flexible tube used for lavage and 

 gavage. T., Eustachian, the canal extending ob- 

 liquely from behind the soft palate to the tympanum. 

 It is partly osseous and partly cartilaginous, lined by 

 mucosa, about 36 mm. long and 2 mm. wide. T., Fal- 

 lopian. See Oviduct. Ts. of Ferrein, a prolongation 

 of the stria; of the Malpighian pyramids into the cortex 

 of the kidney. They are also known as Medullary 

 T., Geissler's, an instrument for showing the 

 stria; which are produced by an electric discharge 

 in a highly rarefied medium. T., Germ, a tube 

 formed in the germination of a spore by distention of 

 the endospore. T., Hearing, a tube consisting of a 

 spiral wire encased in leather and covered with close- 

 textured silk or woollen tissue, with an oval ear-piece 

 and a cup-shaped mouth-piece. It is for the use of 

 persons whose hearing is impaired. T., Henle's 

 Looped. See Tubulus. T., Intestinal, the intestinal 

 canal. T., Kobelt's, in the paroophoron, the remains 

 of tubules in the Wolffian bodies. Ts., Leiter's. See 

 Leiter's Tubes. T. -length, the length of the tube 

 of the microscope at which corrections must be made 

 for the formation of the image at a definite distance. 

 Thir, distance is set arbitrarily by most makers, hence 

 the lack of uniformity. Ts., Lieberktihn's. See 

 '.'. T., Lithotomy, an instrument used in opera- 

 tions for calculi. Ts., Lobular Bronchial, the 

 bronchioles. T., Loop. See Tubulus. T., Medul- 

 lary, the neural canal in the embryo. T., Mi- 

 croscopic, the metallic cylinder that contains the 

 draw-tube of a microscope. Ts., Miescher's. See 

 Sarcocystis miescheri under Parasites {Animal), Table 

 of. T., Milk, one of the lactiferous ducts. T., 

 luscle. See Muscle-fiber. T., Nerve, a primitive 

 t re-fibril. T., Neural. See 7'.. Medullary. T., 

 'Beirne's, a tube of rubber for irrigating the 

 alon. T., Otopharyngeal. See T, Eustachian. 

 ., Ovarian, ova-chains ; germinal epithelium in a 

 sloping ovary. Ts., Peptic, the gastric glands. 

 ., Perforating, uncalcified perforating tubules, or 

 larpey's fibers in bone. T., Perineal. See T.,Litho- 

 >iy- Ts.,Pfluger's. See T., Ovarian. Ts.,Pfluger's 

 'iyary, ducts of the acini of salivary glands. T., 

 'ituitary. See Hypophysis cerebri. Ts., Pulp, tubu- 

 " masses of the tissue proper of an organ, as of the 

 'leen. T., Receiving {of the kidney). See Tubulus, 

 'raight Collecting. T., Rectal, a flexible, rubber tube 

 introduction into the rectum. Ts., Respiratory 

 ronchial. See Bronchioles. T., Ribemont's 

 laryngeal, a tube used for insufflation in asphyxia 

 neonatorum. T., Safety, a small extent of the ectal 



portion of the Eustachian tube which is slightly open 

 and permits equalization of pressure in the tympa- 

 num from the pharynx, and also allows a recoil 

 of air from the tympanum when the tympanic mem- 

 brane is suddenly driven in, as in explosions. Ts., 

 Seminal, the tubes constituting the lobules of the tes- 

 tis. See Cells, Seminal. T., Speaking. See T, 

 Hearing. T., Spray, an apparatus consisting of two 

 tubes so adjusted that a current of air or steam through 

 one will cause a spray to issue from the other. T., 

 Stomach. See T, Esophageal. T., Straight. See 

 Tubules, Straight Collecting. T., Toynbee's Conic 

 Metal, a tube used for washing out the mastoid cells 

 and the tympanum. T., Tracheal, a tracheal cannula. 

 Ts., Uriniferous, Ts., Uriniparous. See Tubulus. 

 T., Uterine, a tube used for injecting the uterus. T., 

 Voltolini's, a small tube used to keep open an inci- 

 sion in the tympanic membrane. 



Tuber {tu'-ber) [tuber, a bump, swelling : pl.,Tubera~]. 

 In biology, a thickened portion of an underground 

 stem. T. anatomica, a protuberance, tumor, or swel- 

 ling. T. annulare. See Pons varolii. T. an- 

 terius. See T cinereum. T. brumale. See T. 

 cibarium. T. calcanei, the tuberosity of the calcan- 

 eum. Tubera candicantia. See Corpora mammil- 

 laria. T. cinereum, a tract of gray matter extending 

 from the optic chiasma to the corpora mammillaria, 

 and forming part of the floor of the third ven- 

 tricle. T. corporis callosi, the splenium. T. 

 eustachii, a slight protuberance below the fenestra 

 ovahs on the inner wall of the tympanic cavity. T. 

 frontale, the frontal eminence. Tubera geniculata, 

 the internal and external geniculate bodies. T. gut- 

 turosum. See Goiter. T. ischii, the tuberosity of 

 the ischium. T. maxillae, the tuberosity of the 

 superior maxilla. T. omentale hepatis, a promin- 

 ence on the left lobe of the liver, corresponding to 

 the lesser curvature of the stomach. T. omentale 

 pancreatis, a prominence of the middle part of the 

 pancreas, corresponding to the lesser omentum. T. 

 parietale, the parietal eminence. T. supracondy- 

 loideum, an eminence opposite the distal end of the 

 internal border of the linea aspera of the fibula. T. 

 supraorbitale, the superciliary ridge. T. syphiliti- 

 cum. See Syphiloma. T. tympani. See T. eus- 

 tachii. T. valvulae {cerebelli), a small prominence 

 of the cerebellum on its inferior vermiform process at 

 its anterior extremity in front of the uvula. T. ver- 

 rucosum, a callosity often found on the great toe at 

 the metatarso-phalangeal joint. T. zygomaticum, 

 a prominence of the zygoma on its lower border near 

 the union of the superior maxilla and the zygomatic 

 process. 



Tubercle (tu'-bur-kl) \juberculum, a tubercle]. I. In 

 anatomy, a rounded prominence on a bone or other 

 part ; also, the rounded end of a bone. 2. In derma- 

 tology, a small protuberance in the corium or subcuta- 

 neous tissue, produced by a morbid deposit. 3. In 

 pathology, a small, hard, granular body, ^ mm. to 2 

 mm. in diameter, yellowish at the center and bounded 

 by a reddish, vascular zone. 4. In biology, applied spe- 

 cifically to the enlargements found on the roots of 

 leguminous plants ; first described by Dalechamps in 

 Ornithopodium tuberosum (1587) and since by Wor- 

 onin, Beyerinck, Prazmowski, Frank, Schlosing Jr., 

 Laurent, Sachmann, Komicke, etc. T., Adductor 

 {of the femur), a slight protuberance at the lower end 

 of the internal supracondylar line of the femur, giving 

 attachment to the tendon of the adductor magnus. 

 T., Amygdaloid, a prominence on the roof of the de- 

 scending cornu of the lateral ventricle. T., Anatomic, 

 a wart-like tuberculous growth sometimes appearing 



