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What is False about female pelvis: and explain in detail?
Ans: B (Plane...) FEMALE PELVIS"For descriptive purpose, true pelvis is divided into inlet, cavity & outlet It is shallow in front, formed by symphysis pubis & measures 4 cm & deep posteriorly, formed by sacrum & coccyx & measures 11.5 cm"- Dutta's Obstetrics 6th/ 88"Pelvic cavity: The cavity is curved in such a way that it is first directed downwards & backwards, & then downwards & the forwards (J-shaped). It has unequal walls, measuring only about 5 cm anteriorly & 15 cm posteriorly" BDC4th/Vol. II-343"In the erect posture, the pelvis is tilted forward. As such, the plane of the inlet makes an angle of about 550 with the horizontal & is called angle of inclination"- Dutta's Obstetrics 6th/88"Plane of greatest pelvis dimension: The plane extends from the midpoint of posterior surface of symphysis pubis to the junction of the second & third sacral vertebrae"- Dutta's Obstetrics 6th/ 90"Obstetrical outlet: It is the segment of the pelvis bounded above by the plane of least pelvic dimensions & below by the anatomical outlet"- Dutta's Obstetrics 6th/ 91Plane of least pelvis dimension or narrow pelvic plane: The plane extend from the lower border of the symphysis pubis to the tip of ischial spines & posteriorly to meet the tip of fifth sacral vertebrae. It is irregularly oval & notched on each side by the ischial spine Dutta's Obstetrics 6th/ 91