Evidence of a subsidiary atrial pacemaker in the crista terminalis of the rabbit heart |
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| Authors: | G L Avanzino D Blanchi A Calligaro R Ermirio M Fisher |
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| Institution: | (1) Institute of Physiology, University of Genova, Via Benedetto XV, 3, I-16132 Genova, (Italy);(2) Institute of General Histology and Embriology, University of Pavia, Pavia, (Italy) |
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| Abstract: | Summary The crista terminalis (CT) with musculi pectinati was isolated from the right atrium: it discharged at a frequency intermediate to that of the 2 nodes. Pacemaker action potentials were recorded from the CT deep layer fibers. The results suggest the presence of a subsidiary atrial pacemaker in the CT deep layer. |
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