On the weight and dimensions of the heart, in health and disease / by Thomas B. Peacock.
- Thomas Bevill Peacock
- Date:
- 1854
Licence: Public Domain Mark
Credit: On the weight and dimensions of the heart, in health and disease / by Thomas B. Peacock. Source: Wellcome Collection.
Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.
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![Avoiildjlioweve]', appear that in the female heart the cavities are some- Avhat larger, relative to the thickness of the walls, than in males. 2. Relation of right and left sides of heart and orifices in nudes arid females. From these observations it thus appears that the girth of the right ventricle, measured externally, exceeded that of the left, in males by l-6th, and in females by l-5th. The length- of the cavity of the right ventricle exceeded that of the left ventricle, in males by about l-7th, and in females by about l-6th. In both sexes the thickness of the walls of the right ventricle is about l-3d that of the parietes of the left ventricle. The thickness of the septum is intermediate between that of the external walls of the right and left ventricles. In males the pulmonic aperture was about l-8th more in circum- ference than the aortic; the left auriculo-ventricular orifice about l-4th more than the aortic ; and the right auriculo-ventricular open- ing one-half larger. In females, the difference between the circum- ference of the aortic and of the other orifices, is somewhat greater. 3. Form of the heart. hi the two sexes, the length of the heart measured from the base to the apex was greater than its breadth measured across the broadest part. These dimensions were taken in comparatively few cases: in these the mean length of the organ was 49 lines, and the mean breadth 43 lines. 4. Thickness of icalls of auricle ; size of coronary arteries, ^x. The walls of the right auricle measured at the middle of the sinus had a medium thickness of half a line to one line, but from the arrangement of the rnusculi jyectinati, it is not easy to estimate their mdth. The walls of the left auricle had an average thickness of 1 to 1-^ lines. The right coronary artery in the cases in which it was measured had a cu'cumference of from 5 to 8 lines ; ordinarily this artery gives off the anterior branch immediately after its origin, but not unfre- quentlythat vessel arises separately from the right sinus of Valsalva. The left coronary artery is generally larger than the right. In one case I have seen the two coronary arteries arise by a connnon trunk, and in another both arteries arose from the same sinus. The orifice of the coronary vein has generally a circumference of about 10 lines. The fossa of the foramen ovale has a mean size of S-C> lines in its longest, and 6'8 lines in its shortest diameter, but the dimensions](https://iiif.wellcomecollection.org/image/b21071706_0045.jp2/full/800%2C/0/default.jpg)
