Pelvic wall and floor

Question 1

Greater pelvis

Answer 1

part of abdominal pelvic cavity that sits above pelvic inlet

Question 2

Lesser pelvis

Answer 2

part of abdominal pelvic cavity that sits below pelvic inlet

Question 3

Pelvic inlet borders

Answer 3

Promotory, Sacral ala, Acruate line, Pecten of pubis, pubic crest

Question 4

Pelvic outlet borders

Answer 4

Pubic sympythis, Ischiopubic ramus, sacrotuberous lig, coccyx

Question 5

Nutation

Answer 5

movement of promotory of sacrum rotationg anteriorly and inferiorly around the axis.
- The ilium is in flare and ischium is out flare

Question 6

Sacrospinous ligament

Answer 6

Origin: lateral side and anterior aspect of sacrum & coccyx
Insertion: ischial spine
Function: avoid nutation

Question 6

sacro tuberous ligament

Answer 6

Origin: posterior and lateral aspect of sacrum & coccyx
Insertion: medial aspect of ischial tuberosity
function:
avoid nutation

Question 7

Piriformis

Answer 7

Origin: anterior sacrum
Insertion: medial surface of greater trochanter
Innervation: direct branch of sacral plexus
Function: lateral hip rotation

Question 8

Obturator internus

Answer 8

Origin: inner surface of obturator internus membrane. Then gives rise to a tenden traveling through lesser sciatic notch and turning sharp behind ischial spine
Insertion: medial surface of greater trochanter
Innervation: direct branch of sacral plexus
Function: lateral hip rotation

Question 9

Coccygeus

Answer 9

Origin: Ischial Spine
Insertion: Lateral margin of sacrum and coccyx
Innervation: Pudendal
Function: Support pelvic viscera

Question 10

Lavator ani - iliococcygeus

Answer 10

Origin: Tendinous arch
Insertion: Lateral and anterior coccyx
Innervation: Pudendal
Function: Support pelvic viscera

Question 11

Levator ani - pubococcygeus

Answer 11

Origin: posterior pubic bone
Insertion: coccyx
Innervation: Pudendal
Function: Support pelvic viscera

Question 12

Levator ani - pubo rectalis

Answer 12

Origin: posterior body of pubis
Insertion: wraps around rectum to join contra lateral fibres
Innervation: Pudendal
Function: Support pelvic viscera

Question 13

Bulbospongiosus

Answer 13

Origin: inner surface of perineal membrane
Insertion: root of clitorus or penis
Innervation: Pudendal
Function: ejaculation and drain last drops of urine

Question 14

Ischio-cavernous

Answer 14

Origin: inner surface ischiopubic ramus
Insertion: root of penis or clitorus
Innervation: Pudendal
Function: maintain erection

Question 15

Superficial transverse perineous

Answer 15

Origin: inner surface ischial tuberosity
Insertion: perineal body
Innervation: Pudendal
Function: stabilize perineal body

Question 16

External anal sphincter

Answer 16

Origin: anterior perineal body
Insertion: anococcy Innervation: Pudendal
Function: constrict anal canal