What is the infundibulum?
The subpulmonic outflow tract, known as the pulmonary infundibulum (conus), is a tubular muscular structure that supports the leaflets of the pulmonary valve.
The posterior wall of the infundibulum is formed by a prominent muscular ridge, known as the crista supraventricularis, that separates the tricuspid and pulmonary valves.
It is also a unique feature of the RV because in the left ventricle, the aortic and mitral valves have fibrous continuity
Image from Practical Textbook
of Cardiac CT and MRI, Springer, 2015
