Anatomy and pathology of the whale heart with special reference to the coronary circulation
Anatomy and pathology of the whale heart with special reference to the coronary circulation
复制标题
鲸鱼心脏的解剖学和病理学,特别是冠状循环
DOI:
10.1002/ar.1091410408
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发表时间:
1961
期刊:
影响因子:
--
通讯作者:
H. Perlmutter
中科院分区:
文献类型:
--
作者:
R. Truex;F. G. Nolan;H. P. Schneider;H. Perlmutter
The unique position of the whale in the animal kingdom has long stimulated the curiosity and challenged the research interest of the scientific world. These enigmatic mammals, whose remote ancestors lived on land, have, during the evolutionary process of adapting to a marine environment, modified some of their organ systems. It is not surprising, therefore, that observations have been made upon the anatomy, pathology and physiology of the cetacean circulatory and respiratory systems. Knox (1838) observed the great size of the heart in one adult and one fetus of the fin whale (Balaena borealis Knox). He stated the adult heart “equalled in size an ordinary sized washing-tub,’’ while the fetal heart was “peculiar in form, being much flattened, and scarcely exhibiting the appearance of an apex.” Pouchet and Beauregard ( 1889, 1892) called attention to the completion of an arterial circle on the ventral surface of the cardiac infundibulum in two young whales (Balaenoptera musculus and rostrata). These authors also noted anastomoses between the marginal arteries and the ventral interventricular arteries in both specimens. White and Kerr (’15-27) examined the coronary vessels in the heart of an adult sperm whale, but found no evidence of coronary artery disease. Walmsley (‘38) exposed and measured the outside diameters of the coronary arteries in a 320 pound heart of an adult female fin whale (Balaenoptera physalus). He also gave an excellent description of the heart and coronary circulation in a fin whale fetus with a body length of 143 cm. Walmsley stated that the “coronary veins have the usual mammalian distribution although they are typical of the cetacean venous system in that multiple channels replace veins which are single in most mammals.’’ Race, Edwards, Halden, Wilson and Luibe1 (’59) recently completed a study on the aorta, coronary arteries, venous drainage, and cardiac muscle fibers in a 256-pound heart of an adult male sperm whale (Physeter catodon). They also studied the heart of a sperm whale fetus with a body length of 2.1 meters. These authors measured the adult heart and coronary circulation and graphically illustrated their results. Although they observed large, multiple anastomoses between the left and right coronary arteries, they stated they “found no evidence of atherosclerosis or calcification in any arteries.” The cardiac conduction system of the whale has been examined morphologically by several investigations (White and Kerr, ’15-77; Ogata, ’17; Ogata and Sassa, ’19; Walmsley, ’38; Race et al., ’59; Truex, ’61). Electrocardiograms have been recorded from the live Beluga, fin, gray, and pilot whales (King, Jenks and White, ’53; White, King and Jenks, ’53; Kanwisher and Senft, ’60; Nolan and Truex, unpublished data). For physiological experiments on smaller aquatic mammals the reader is referred to the interesting papers of Irving (’39), Scholander (’4O), Scholander and Irving (’41), and Irving, Scholander and Grinnell (’41). The above anatomical and pathologic investigations on the whale heart and coronary circulation were of necessity based