Figure 2.

A – The angles of branching of the septomarginal trabecula from the interventricular septum. Group A from 0 to 30 degrees, group B from 31 to 60 degrees, group C from 61 to 90 degrees. B – Interior of the right ventricle, division of the crista supraventricularis into four branches; sub-type IVb of the septomarginal trabecula (♂, 38 yrs)

APM – anterior papillary muscle, SC – lower part of the crista supraventricularis, Ia in black circle – septo-papillary segment of the septomarginal trabecula, Ib in black circle – papillomarginal segment of the septomarginal trabecula, II – second branch of the SC, III – third branch of the SC, IV – fourth branch of the SC