Annulus fibrosus
The annulus fibrosus lies at the junction of the membranous septum and the atrioventricular valve. This ring of dense CT is the part of the cardiac skeleton that encircles each valve. The annulus provides support for that valve and anchorage for the insertion of cardiac muscle fibers. The dense irregular CT core of each valve leaflet is continuous with the annulus fibrosus. 100x
Membranous septum
The annulus fibrosus lies at the junction of the membranous septum and the atrioventricular valve. This ring of dense CT is the part of the cardiac skeleton that encircles each valve. The annulus provides support for that valve and anchorage for the insertion of cardiac muscle fibers. The dense irregular CT core of each valve leaflet is continuous with the annulus fibrosus. 100x
Right atrioventricular valve
The annulus fibrosus lies at the junction of the membranous septum and the atrioventricular valve. This ring of dense CT is the part of the cardiac skeleton that encircles each valve. The annulus provides support for that valve and anchorage for the insertion of cardiac muscle fibers. The dense irregular CT core of each valve leaflet is continuous with the annulus fibrosus. 100x
Annulus fibrosus
The annulus fibrosus lies at the junction of the membranous septum and the atrioventricular valve. This ring of dense CT is the part of the cardiac skeleton that encircles each valve. The annulus provides support for that valve and anchorage for the insertion of cardiac muscle fibers. The dense irregular CT core of each valve leaflet is continuous with the annulus fibrosus. 100x
Area shown in next image
The annulus fibrosus lies at the junction of the membranous septum and the atrioventricular valve. This ring of dense CT is the part of the cardiac skeleton that encircles each valve. The annulus provides support for that valve and anchorage for the insertion of cardiac muscle fibers. The dense irregular CT core of each valve leaflet is continuous with the annulus fibrosus. 100x
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