Figure 9.

A – Sub-type IVa of the septomarginal trabecula: a) horizontal cross-section through the lumen of the right ventricle; b) sagittal cross-section through the lumen of the right ventricle. B – Interior of the right ventricle; sub-type IVa of the septomarginal trabecula (♂, 40 yrs)

IS – interventricular septum, AW – anterior wall of the right ventricle, APM – anterior papillary muscle, ST – septomarginal trabecula: a – septo-papillary segment, b – papillo-marginal segment, SC – lower part of the crista supraventricularis, Ia in black circle – septo-papillary segment of the septomarginal trabecula, Ib in black circle – papillo-marginal segment of the septomarginal trabecula