<prompt> Sacrospinous ligament is crossed by all, EXCEPT:Internal pudendalaretryInternal pudendal veinNerve to obturatorinternusNone of the above  <response>: The ischial spine projects downwards and a little medially. The sacrospinous ligament is attached to its margins, separating the greater from the lesser sciatic foramen. The ligament is crossed posteriorly by the internal pudendal vessels and the nerve to obturatorinternusRef: Grays anatomy 40th edition, Chapter 111 