. Advanced lessons in practical physiology for students of medicine. Physiology. CP. Fig. 52.—Stimulation of Frog's Heart During Diastole. S, Moment of stimulation; E, extra contraction: CP, compensatory pause. 4. The Transmission of the Wave of Excitation.—The wave of exci- tation, ordinarily started at the venous entrance of the heart, is trans- mitted in the turtle and frog over muscular connections and activates its different segments consecutivel}'. The transmission of this impulse may be interfered with by compressing these muscular bridges by means of a screw-clamp applied to the auricu
. Advanced lessons in practical physiology for students of medicine. Physiology. CP. Fig. 52.—Stimulation of Frog's Heart During Diastole. S, Moment of stimulation; E, extra contraction: CP, compensatory pause. 4. The Transmission of the Wave of Excitation.—The wave of exci- tation, ordinarily started at the venous entrance of the heart, is trans- mitted in the turtle and frog over muscular connections and activates its different segments consecutivel}'. The transmission of this impulse may be interfered with by compressing these muscular bridges by means of a screw-clamp applied to the auriculoventricular junction. By grad- ually tightening this screw a degree of compression may be established which will allow only some of these waves of excitation to reach the. 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 Burton-Opitz, Russell, b. 1875. Philadelphia, London, W. B. Saunders Company
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