Typically, the infundibulum refers to the corresponding internal structure, whereas the conus arteriosus refers to the external structure. Defects in infundibulum development can result in a heart condition known as tetralogy of Fallot.
Generally, the infundibulum designates the internal component, whereas the conus arteriosus identifies the external one. Abnormalities in infundibulum development often cause a heart ailment known as tetralogy of Fallot.