On the nature and treatment of the diseases of the heart : containing also and account of the musculo-cardiac, the pulmo-cardiac and the veno-pulmonary functions / by James Wardrop.

  • Wardrop, James, 1782-1869.
Date:
1851
Catalogue details

Licence: Public Domain Mark

Credit: On the nature and treatment of the diseases of the heart : containing also and account of the musculo-cardiac, the pulmo-cardiac and the veno-pulmonary functions / by James Wardrop. Source: Wellcome Collection.

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    its peculiar luechaniim. Hunter on the Blood. See Guy's Hospital JEtc- porCe. blood within the right ventricle to regurgitate into the right auricle. This peculiarity in the mechanism of the tricuspid valve (bb) was remarked by Hunter. I believe the valves of the right side of the heart are not so perfect as those of the left; and again, I have reason to believe that the valves on the right side of the heart do not so perfectly do their duty as those of the left; therefore we may suppose it was not so necessary. But the precise use of this structure was left for King to explain, and he was led from its functions to consider it and to give it the appellation of a safety-valve. The mechanism of the auriculo-ventricular valves of the pulmonic heart may be more fully understood by a reference to the accompanying diagrams, selected from Mr. King's interesting memoir. In both figures (a) represents the sohd wall of the left ventricle, (b) the yielding wall of the right ventricle, (c) the fixed curtain with its cord. Fig. 13 shows the valve when closing, and fig. 13 the yielding wall dis- tended. Fig. 12. Fig. 13. The office of the pulmonic valves. Fig. 11. The semilunar valves of the pulmonary artery (d) being nearly as effectual in preventing anything like regurgitation of the venous blood into that vessel, as the aortic valves are in preventing a regurgitation of the arterial blood into the left ventricle, it is evident that scarcely any venous blood, once ejected into the pulmonary artery, can ever regurgitate into the right ventricle. I have stated that scarcely any blood can regurgitate from the pulmonary artery into the right ventricle ; but that a