Atrioventricular bundle
The lower portion of the membranous septum of the interventricular septum contains the atrioventricular bundle (of His), a continuation of the conducting system from the AV node. The AV bundle splits into right and left bundle branches supplying their respective ventricles. Bundle branches continue as Purkinje fibers, which innervate the ventricular myocardium. 400x
Atrioventricular bundle
The lower portion of the membranous septum of the interventricular septum contains the atrioventricular bundle (of His), a continuation of the conducting system from the AV node. The AV bundle splits into right and left bundle branches supplying their respective ventricles. Bundle branches continue as Purkinje fibers, which innervate the ventricular myocardium. 400x
Left bundle branch
The lower portion of the membranous septum of the interventricular septum contains the atrioventricular bundle (of His), a continuation of the conducting system from the AV node. The AV bundle splits into right and left bundle branches supplying their respective ventricles. Bundle branches continue as Purkinje fibers, which innervate the ventricular myocardium. 400x
Right bundle branch
The lower portion of the membranous septum of the interventricular septum contains the atrioventricular bundle (of His), a continuation of the conducting system from the AV node. The AV bundle splits into right and left bundle branches supplying their respective ventricles. Bundle branches continue as Purkinje fibers, which innervate the ventricular myocardium. 400x
Myocardium
The lower portion of the membranous septum of the interventricular septum contains the atrioventricular bundle (of His), a continuation of the conducting system from the AV node. The AV bundle splits into right and left bundle branches supplying their respective ventricles. Bundle branches continue as Purkinje fibers, which innervate the ventricular myocardium. 400x
Endocardium >
The endocardium forms the inner layer of the heart and consists of an epithelium (endothelium), subendothelial connective tissue and a subendocardial layer. Purkinje fibers are located in the subendocardial layer.
- Endothelium
The endocardium forms the inner layer of the heart and consists of an epithelium (endothelium), subendothelial connective tissue and a subendocardial layer. Purkinje fibers are located in the subendocardial layer.
- Subendothelial connective tissue
The endocardium forms the inner layer of the heart and consists of an epithelium (endothelium), subendothelial connective tissue and a subendocardial layer. Purkinje fibers are located in the subendocardial layer.
- Subendocardial layer
The endocardium forms the inner layer of the heart and consists of an epithelium (endothelium), subendothelial connective tissue and a subendocardial layer. Purkinje fibers are located in the subendocardial layer.
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