<prompt> Sacrotuberous ligament is pierced by ?SI nerveL5 nerveCoccygeal nerveNone  <response>: Ans. is c i.e., Coccygeal nerve Sacrotuberous ligament is pierced by :-Perforating cutaneous nerveFifth sacral S5 and cocygeal nervesBranches of coccygeal plexusCoccygeal branch of inferior gluteal aery 