FIGURE

Figure 2

ID

ZDB-FIG-190723-2505

Publication

Burkhard et al., 2017 - On the Evolution of the Cardiac Pacemaker

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Figure 2

Illustration of heart evolution. (A) Drosophila dorsal vessel and (B) Ciona heart with bilateral pacemaker structures. (C) two-chambered zebrafish heart with pacemaker ring at sinoatrial junction. (D) Four-chambered mammalian heart, primary pacemaker in the sinoatrial node (SAN). (A–C: anterior on the left, posterior on the right), Arrows indicate direction of blood flow. Red = myocardial/muscle layer; orange = endocardium; A = atrium; V = ventricle; SV = sinus venosus; BA = bulbus arteriosus.

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Acknowledgments

This image is the copyrighted work of the attributed author or publisher, and ZFIN has permission only to display this image to its users. Additional permissions should be obtained from the applicable author or publisher of the image. Full text @ J Cardiovasc Dev Dis