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Division of Experimental Surgery and Pathology, Mayo Foundation Rochester, Minnesota ANATOMY AND EMBRYOLOGY , The incomplete nature of our knowledge of even the gross anatomy of the heart of certain common mammals is attested by a few papers devoted to the gross and neuroanatomic features of the hearts of certain animals. The m�mber, anatomic distribution, and functional importance of the major cardiac veins of the right side of the heart of the dog have been studied from the point of view of their drainage by Gregg, Shipley & Bidder (1). From SO to 92 per cent of the blood flow of the right coronary artery is drained into the right atrium rather than through the thebesian vessels into the right ventricle as formerly was believed by most workers. In sixteen experiments the flow from the major anterior cardiac veins ranged from 8.5 to 26.5 c.c. per min. Nonidez (2) whose observations were made on the heart of the pup and of the rhesus monkey has found that in addition to the sinoatrial (S-A) and atrioventricular (A-V) nodes" there is a distinct main bundle of the impulse con9ucting system. This divides into right and left bundle branches which are
Annual Review of Physiology – Annual Reviews
Published: Mar 1, 1945
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