<prompt> Upper border of pubic ramus forms -Pubic tuberclePubic symphysisArcuate lineUpper margin of obturator foramen  <response>: Ans. isci.e., Arcuate lineSuperior upper border of superior pubic ramus also called pectineal line or pecten pubis forms Arcuate line.Inferior border of super pubic ramus forms upper margin of obturator foramen 