| A | B |
|---|
| Pelvis | the area of transition between the trunk and the lower limbs |
| Greater pelvis | inferior part of the abdominal cavity between the alae of the ilium |
| Lesser pelvis | provides the skeletal framework for the pelvic cavity and the perineum |
| Perineum | the area of the trunk between the thighs and the buttocks, extending from the pubis to the coccyx |
| Pelvic brim | superior pelvic aperture |
| Pelvic outlet | inferior pelvic aperture |
| Superior margin of the pubic symphysis | anterior boundary of the pelvic inlet |
| Inferior margin of the pubic symphysis | anterior boundary of the pelvic outlet |
| False pelvis | the expanded portin of the bony pelvis above the pelvic brim |
| True pelvis | cavity of the pelvis below the pelvic brim and above the pelvic outlet |
