Uberon definition : Between the plica triangularis and the surface of the palatine tonsils is a space
known as the tonsillar fossa (or tonsillar sinus); in many cases, however, this sinus
is obliterated by its walls becoming adherent.;
Between the plica triangularis and the surface of the palatine tonsils is a space
known as the tonsillar fossa (or tonsillar sinus); in many cases, however, this sinus
is obliterated by its walls becoming adherent.