Bony Pelvis (24)

Question 1

Bony Pelvis

Answer 1

Supports and protects the pelvic viscera, transmits upper body weight to lower extremities, provides a stable base for lower limb function and forms birth canal

Question 2

Structure

Answer 2

Formed by R and L hip bones, sacrum and coccyx

Question 3

Each hip bone is formed by 3 bones that fuse together at puberty

Answer 3

Ilium, ischium and pubis

Question 4

Joints of the pelvis

Answer 4

Public Symphysis- a relatively immobile fibrocartilaginous joint

Sacroiliac joints- synovial joints formed between R and L ilia and sacrum. minimal gliding and rotational movements occur at these joints

Question 5

Ligaments of the pelvis

Answer 5

Sacrotuberous Ligament- attaches to the ischial tuberosity and sacrum; best seen in a posterior view

Sacrospinous Ligament- attaches to ischial spine and the sacrum; lies deep to the sacrotuberous ligament

Both ligaments transform the greater and lesser sciatic notches into the greater and lesser static foramina

Question 6

Superior Pelvic aperture (pelvic inlet)

Answer 6

Delineated by pelvic brim

Question 7

Boundaries between pelvic major and minor

Answer 7

Pelvis Major (false pelvis) which is superior and contains the abdominal viscera, and the pelvis minor (true pelvis) which is inferior and contains the pelvic viscera

Question 8

Inferior Pelvic aperture (pelvic outlet, birth canal)

Answer 8

Delineated by ischial tuberosities, ischial spines, ischiopubic rami and the coccyx

Diamond shaped area that corresponds with the perineum

Question 9

parietal pelvic fascia

Answer 9

The investing fascias of the pelvic muscles line the pelvic cavity and are continuous with abdominal muscular fascia

Question 10

pelvic peritonum

Answer 10

peritoneum that invests abdominal organs extends into the true pelvis and partially invests the pelvic organs forming folds and spaces between them

Male and female- spaces on either side of rectum (pararectal fossa) and urinary bladder (paravesical fossa)

Males only- pouch between the rectum and seminal vesicles/urinary bladder (rectovesical) and a fold between the sacrum and prostate/bladder (sacrogenital)