Assertion: right cusp | /r/MadeOf | good deal of cushion tissue
Facets:
Source sentences:
text: The right cusp still contains a good deal of cushion tissue, but it is being muscularized on its ventral border by the muscular chordae which appear to split and to grow along both its ventricular and auricular aspects, while muscle fibres from the left border of the muscular interventricular septum are investing the ventricular surface of the cusp in its dorsal portion.