iac thrombosis. H. -disease, any functional or 

 »anic pathologic condition of the heart. H., Fatty, 

 name given to two distinct pathologic conditions of 

 be heart-tissue. In the first there is a true fatty de- 

 sneration of the muscular fibers of the heart ; and in 

 le second there is an increase in the quantity of sub- 

 cardial fat — a fatty infiltration. The former and 



545 HEART 



most serious condition is due to a deficiency in the 

 supply of oxygenated blood to the heart, arising 

 either from local or general causes. It gives rise to 

 asthma, angina pectoris, and a tendency to syncope and 

 sudden death. The second condition is usually asso- 

 ciated with general obesity, and may present the same 

 symptoms as the first. H. -hurry, Paroxysmal. 

 See Tachycardia . H., Hypertrophy of, an abnor- 

 mal increase in the muscular tissue of the heart. See, 



avity of right auricle 2. Appendix auriculae. 3. Superior 

 na cava. 4. Inferior vena cava. 5. Fossa ovalis ; the 

 rominent ridge surrounding it is the annulus ovalis. 6. 

 eustachian valve. 7. Opening of the coronary vein. 8. 

 Coronary valve. 9. Entrance of the auriculo-ventricular 

 opening. Between the figures 1 and 9, several foramina 

 thebesii are seen. a. Right ventricle. 6, c. Cavity of right 

 ventricle e,f. Tricuspid valve, g. Long columna carnea. 

 k. The "long moderator band." i. The two columnae 

 carneae of the right curtain, k. Attachment of chordae 

 tendineaeof the left limb of the anterior curtain. /, /. Chordae 

 tendineae of the " fixed curtain " of the valve, m. Valve of 

 the pulmonary artery. «. Apex of left appendix auriculae. 

 o. Left ventricle. /. Ascending aorta, q. Its transverse por- 

 * = ~"i. r. Descending aorta. 



Horizontal Section of Lungs and Heart. 



*> 1. Upper lobes of lungs. 2, 2. Lower lobes. 3 Dorsal ver- 

 tebra. 4, 4. Two ribs. 5. Heart. 6 Right auricular 

 appendix. 7. Superior vena cava. 8. Aorta. 9. Pulmonarv 

 artery. 10. Left auricle. 11. Left auricular appendix 12. 

 Mouths of right pulmonary' veins. 13. Mouths of left pul- 

 monary veins. 14. Thoracic aorta. 15. Esophagus. (See 

 oho pp. 113 and 370.) 



BR 



Anatomy of the Heart, Left Side. 



avity of left auricle. 2 Cavity of the appendix auriculae. 



Opening of the two right pulmonary veins. 4. The sinus 

 "-> which the left pulmonary veins open. 5. Left puhnon- 

 veins 6. Auriculo-ventricular opening. 7. Coronary- 

 vein. 8. Left ventricle. 9, 9. Cavity of the left ventricle. 

 «. Mitral valve. b, b, b. Columnae carneae. c. c. Fixed 

 columnae carneae. d. Arch of the aorta, e. Pulmonary' 

 artery. /. Obliterated ductus arteriosus, g. Left pulmon- 

 ary artery. A - Right ventricle. 1. Point of the appendix of 

 "*~ht auricle. 



35 



Scheme of the Blood-pressure. 



H. Heart, a. Auricle, v. Ventricle. A. Arterial ; C, capillary; 

 V, venous areas. The circle indicates the parts within the 

 thorax. B, P. Pressure in the aorta. 



also, Hypertrophy. H. -murmurs. See Murmur. 

 H. -scald. Same as //.-burn. H. -shock, Latham's 

 term for sudden cardiac breakdown during exertion, 

 not due to rupture of a valve. H., Sounds of, the 

 sounds observed in auscultation of the heart, occurring 

 synchronously with systolic contraction and the closure 

 of the valves, etc' H., Valves of. See Valve. 

 H. -starvation, Fothergill's term for a form of cardiac 

 asthenia occurring in adult age, and characterized by 

 feeble circulation, cold extremities, tendency to ver- 

 tigo, and pseudo-apoplectic attacks, but with absence 

 of arcus senilis. It is due to general ill-nutrition, 



