THORIUM 



1516 



THROMBO-ARTERITIS 



behind and above by the structures in the lower part of 

 the neck ; it contains the heart inclosed in the peri- 

 cardium and the lungs invested by the pleura, etc. T., 

 Regions of. See Regions. 



10 ji 



Muscles of Ventral Aspect of Thorax. 

 . Pectoralis major. 2. Its clavicular portion. 3. Its sterno- 

 costal portion. 4. Its humeral attachment, divided and dis- 

 placed upward. 5,5,5. Its fasciculi of attachment to ribs. 6. 

 Pectoralis minor. 7. Subclavius. 8. Deltoid. 9. Inferior 

 border of pectoralis minor. 10. Digitations of serratus 

 magnus. 11. Corresponding digitations of the external 

 oblique. 12, 12. Ventral border of latissimus dorsi. 13. Its 

 tendon of attachment to humerus. 14. Teres major. 15. 

 Subscapulars. 16. Long head of triceps. 17. Lower por- 

 tion of deltoid. 18. Sterno-mastoid. 19. Lower portion of 

 sierno-hyoid. 20. Trapezius. 



Thorax, Anterior View. 

 I, Manubrium sterni. 2. Gladiolus. 3. En si form cartilage of 

 xiphoid appendix. 4. Circumference of apex of thorax. 5. 

 Circumference of base. 6. 1st rib. 7. 2d rib. 8,8. 3d, 4th, 

 5th, 6th and 7th ribs. 9. 8th, 9th and toth ribs. 10. nth and 

 12th ribs. 11,11. Costal cartilages. 



Thorium [tho'-re-um) [Icel., Thorr\ A rare metal 

 discovered by Berzelius in 1828; symbol Th, at. 

 wt. 23I.9. It is chemically related to tin. Its 

 medicinal qualities are unknown. See Elements, 

 Table of. 



Thorn [ME., thorn, thorn]. A sharp excrescence on a 

 plant. T. -apple. See Datura and Stramonium. 

 T.-apple Crystals. Sec Hedgehog Crystals. T.- 

 headed Worms. See Aeanthoeephala. See under 

 Parasites {Animal), Table of. 



Thorncliffe Disinfectant. See /sal. 

 Thornwaldt's Bursitis, or Disease. Thormvaldtit 

 A form of naso-laryngeal stenosis associated with t 

 abnormal formation of a cyst-like cavity in the mic 

 of the pharyngeal gland, containing pus or muc 

 pus. See Diseases, Table of. 

 Thorough (thur'-o) [ME., thorou, through 

 Through, complete. T.-joint. Same as Art/a 

 dia or Diarthrosis. T.-pin, a swelling in t 

 hollow of the hock of the horse, on both inn 

 and outer aspects, caused by distention of i 

 synovial sheath of the flexor perforans pedis te 

 don. T.-wort. See Eupatorium. 

 Thorter-ill (thor'-ter-il). Same as Louping-ill'q. 

 Thought-transference See Telepathy. 

 Thread (thred) [ME., threed, thread]. The spi 

 and twisted fibers of cotton, linen, or silk, fl 

 last, uncolored, is preferable for sutures. Ti 

 Mycelial, the hyphse of the mycelium. Ti 

 Nuclear, chromatin fibrils of the cell-nuclei 

 T.-worm, applied loosely to any nematode won 

 also specifically to Oxyuris vermicular, 

 under Parasites {Animal), Table of. 

 Thready (thred f -e) [ME., threed, thread]. Like 

 thread. See Pulse. 

 Thremmatology (threm-at-ol ' -o-je)[0pep,fia, a nurslin 

 loyoq, science]. In biology, experimental or artinc 

 evolution. 

 Threpsology (threp-sol'-o-je) [Opeipic, nutrition ; 7.6] 

 treatise]. The sum of knowledge regarding t 

 nature and processes of nutrition. The science I 

 trophic phenomena and conditions. 

 Threshold (thresh' '-old) [ME., threshold, threshok 

 The limit of perceptibility of a stimulus. ' 

 Schwelle, also Eec/mer^s Law. 

 Thridacium (thri-da' '-se-um) [Bpida^, lettuce]. 1 

 expressed and inspissated juice of the lettuce;! 

 variety of lactucarium. 

 Thrift [ME., thrift, thrift]. A plumbagineous plai 

 Armeria vulgaris, native of both continents. 1; 

 flowers are diuretic. Unof. 

 Thrill (thril) [ME., thrillen, to thrill]. Fremitus, 

 sort of quiver or shiver of the arteries or other org 

 in certain cases of cardiac disease, aneurysm, or oti 

 arterial disease. Varieties are purring thrill, q. ] 

 and hydatid thrill, obtained over a hydatid cyst. 

 Throat (ihrot) [ME., throte, throat]. A term for j 

 fauces, pharvnx, larynx, etc. ; the ventral part of f 

 neck ; jugulum. In biology, the opening or gofcj 

 of a monopetalous corolla, where the border and 

 tube join, and a little below. See Eau x. T.-cougli 

 cough due to irritation of the pharynx apart from > 

 eases of the respiratory tract, as front an 

 uvula. T. -mirror. See Laryngeal Mirror. 

 wort, the genera Trachclium and Liatris : al 

 of Campanula, the Digitalis purpurea and Scropl 

 laria nodosa. 

 Throaty (throt'-c) [ME., throte, throat]. 

 peculiar guttural sound, as a throaty voice 

 Throb (throb) [ME., throbben, to throb]. 



or beat. 



Throbbing (throb'-ing) [ME., throbben, to throb], 

 rhythmic beating, as in an inflamed part. T. Ao:j. 

 a characteristic symptom of hysteria and neu 

 it is an epigastric pulsation, often very forcible } 

 suggesting abdominal aneurysm. 

 Thrombin (throm' -bin) [tlpoiijor, thrombus]. Fib 



ferment. 

 Thrombo-arteritis ( throm' -bo-ar-ter-i'-f is) 

 thrombus ; aprnpin, artery ; ine, inflam 

 Acute arteritis with thrombosis. Either pro 

 be primary. 



1 [avin 



A pulsatjl 



