HEART 



545 



III \RI 



cardiac thrombosis. H. -disease, any functional or 

 organic pathologic condition of the heart. H., Fatty, 

 a name given to two distinct pathologic conditions ol 

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

 generation of the muscular fibers of the heart ; and in 

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



pericardial fat— a tatty infiltration. The former and 



mosl 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 pet toris, and a tendency to syncope and 

 sudden death. I lie se< ond i ondition is usually a 

 ciated with general obesity, and may present the same 

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

 See Tachycardia. H., Hypertrophy of, an abnor 

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



Anatomy of rHE Heart, Right Side. 



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

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

 prominent ridge surrounding it is the anuulus 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 q, several foramina 

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

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

 h. The "long moderator band " i. The two columna? 

 carneae of the right curtain, k. Attachment of chordae 

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

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

 the pulmonary artery, n. Apex of left appendix auriculae. 

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

 tion, r. Descending aorta. 



Anatomy of the Heart, Left Side. 



. Cavity of left auricle. 2 Cavity <>( the appendix auriculae. 

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

 into which the left pulmonary veins open. 5. Left pulmon- 

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

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

 a. Mitral valve, b, b, b. Columnar carneae. c. c. Fixed 

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

 arterv. f. Obliterated ductus arteriosus, g. Left pulmon- 

 ary artery, h. Right ventricle, i. Point of the appendix of 

 right auricle. 



35 



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. Pulmonary 

 arterv. 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 

 also pp- r/j and 370.) 



BR 



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 asH.-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, 



