ANATOMY OF ORGAN INVOLVED The Pelvis: it is the lower (caudal) portion of the trunk of the body, forming a basin bounded anteriorly and laterally by the hip bones (pubis, pubic arch, ilium and ischium) and posteriorly by sacrum and coccyx. Pelvic structure in male and female differs both in shape and in relative size. The most obvious difference between the male and female pelvis is in the shape. This examination involves the female internal genitalia which include;