Lecture 1 - Bones of Pelvis

Question 1

Boundaries of Pelvic Inlet (Superior Outlet) (Pelvic Brim)

Answer 1

Sacral promontory, arcuate lines, iliopectineal line of pubis

Question 2

Boundaries of Pelvic Outlet

Answer 2

Bounded by coccyx, sacrotuberous ligaments, ischial tuberosities, ischiopubic rami, pubic symphysis

Question 3

False (Greater) Pelvis

Answer 3

Expanded area above pelvic brim; part of pelvis above pelvic brim = greater (false) pelvis; pelvic brim = pelvic inlet

Question 4

True (Lesser) Pelvis

Answer 4

Portion of pelvis below pelvic brim (pelvic inlet); closed below by pelvic diaphragm

Question 5

What 3 bones make up the pelvis?

Answer 5

Ilium, ischium, and pubis

Question 6

Acetabular Fossa

Answer 6

For articulation with head of femur; lunate surface

Question 7

Acetabular Labrum

Answer 7

Fibrocartilage rim around edge of acetabulum

Question 8

Obturator Foramen

Answer 8

Covered by membrane; passage for obturator nerve and vessels

Question 9

Pubic Tubercle

Answer 9

Attachment for inguinal ligament

Question 10

Anterior Superior Iliac Spine (ASIS)

Answer 10

Attachment of inguinal ligament; proximal attachment for sartorius muscle

Question 11

Anterior Inferior Iliac Spine (AIIS)

Answer 11

Proximal attachment for straight head of rectus femoris

Question 12

Greater Sciatic Notch

Answer 12

Converted into superior and inferior parts by piriformis muscle

Question 13

Posterior Ligaments of Pelvis

Answer 13

Posterior sacrospinous ligaments, sacrotuberous ligaments, and sacrospinous ligaments

Question 14

Iliac Fossa

Answer 14

Attachment surface for iliacus muscle

Question 15

Auricular Surface

Answer 15

Articulates with auricular surface of sacrum

Question 16

Sacrum

Answer 16

Consists of 5 fused vertebrae; wing-like processes of each vertebra = alae, for attachment to ilium; lip of body of first sacral vertebra = sacral promontory

Question 17

Median Crest of Sacrum

Answer 17

Fused spinous processes

Question 18

Medial Crest of Sacrum

Answer 18

Fused articular processes

Question 19

Lateral Crest of Sacrum

Answer 19

Fused transverse processes

Question 20

Male Pelvis

Answer 20

Thicker, heavier, deeper greater pelvis, narrower and deeper lesser pelvis, android pelvic inlet, small pelvic outlet, narrow pubic arch, round obturator foramen, large acetabulum

Question 21

Female Pelvis

Answer 21

Thinner, lighter, shallow greater pelvis, wide and shallow lesser pelvis, gynecoid pelvic inlet, large pelvic outlet, wide pubic arch, oval-shaped obturator foramen, small acetabulum