. Comparative animal physiology. Physiology, Comparative; Physiology, Comparative. 554 Comparative Animal Physiology trasystoles led Hoff**^ to the conclusion that the QRST complex represents the algebraic summation of impulses arriving asynchronously at the different surfaces of the heart. The T wave is said to represent repolarization of the ventricular surface, an upright T indicating earlier repolarization of the left ventricle, an inverted T earlier repolarization of the right side of the heart (Figs. 199, 200).^^ That the T wave represents repolarization is indicated by the action potent
. Comparative animal physiology. Physiology, Comparative; Physiology, Comparative. 554 Comparative Animal Physiology trasystoles led Hoff**^ to the conclusion that the QRST complex represents the algebraic summation of impulses arriving asynchronously at the different surfaces of the heart. The T wave is said to represent repolarization of the ventricular surface, an upright T indicating earlier repolarization of the left ventricle, an inverted T earlier repolarization of the right side of the heart (Figs. 199, 200).^^ That the T wave represents repolarization is indicated by the action potentials of strips of heart muscle.^°. V V -A. J-J. 1 I 1 i 1 i 1 i i I i I ,M M t Pig. 200. Electrocardiogram from an eel. A, Normal ECG. B, Activity of isolated sinus venosus. From ;. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Prosser, C. Ladd (Clifford Ladd), 1907-; Bishop, David W. Philadelphia, Saunders
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