Pelvis

Question 1

Pelvis key boney landmarks

Answer 1

pubic crest
pectineal and arcuate lines
ischial ramus-inferior pubic ramus
Sciatic notches

Question 2

Pelvic Ligaments

Answer 2

sacrospinous ligament

sacrotuberous ligament

Question 3

Boundary Lines

Answer 3

Pelvic inlet

Pelvic outlet

Question 4

Pelvic Regions

Answer 4

False Pelvis- lower part of abdomen

True Pelvis-

Question 5

Triangles in muscular wall of pelvic outlet

Answer 5

urogenital triangle

anal triangle

Question 6

Pelvis Muscles
Ventral
not present

Answer 6

Rectus abdominus`–

Question 7

Pelvis Muscles
Subvertebral Musculature
not present

Answer 7

Psoas major and minor

Question 8

Pelvis Muscles
Lateral Musculature– INTERNAL
aka pelvic floor

PILIP

Answer 8

Levator Ani Muscle
Levator ani-Pubococcygeus part
Levator Ani-Iliococcygeus part
Ischiococcygeus msucle 
Piriformis

fx of all: compress urethra, vagina, and anus
elevate/ support/ active in normal breathing

Question 9

Pelvis Muscles

Lateral Musculature– MIDDLE

Answer 9

Obturator Internus –annexed by lower limb

Question 10

Pelvis Muscles

Lateral Musculature- MIDDLE anal triangle of perineum

Answer 10

Deep external anal sphincter

fx: narrows anal canal

Question 11

Pelvis Muscles

Lateral Musculature- MIDDLE urogenital triangle of perineum

Answer 11

male:
deep transverse perinei muscle 
external urethral sphincter 
female: 
sphincter urethrovaginalis 
compressor urethrae muscle
external urethral sphincter

Question 12

Pelvis Muscles

Lateral Musculature–External Layer- pelvis

Answer 12

obturator externus–annexed by lower limb

Question 13

Pelvis Muscles

Lateral Musculature–External Layer- anal triangle of the perineum

Answer 13

superficial external anal sphincter muscle

fx: narrows anal canal

Question 14

Pelvis Muscles
External Layer- urogenital triangle of the perineum
with functions
We got SIB’s

Answer 14

male:
Superficial transverse perinei (fx: stabalize pelvic floor by pulling on perineal body)
Ischiocavernosus (fx: assist in erection maintenance)
Bulbospongiosus (fx: compress spongy urethra to empty it; assists w ejaculation)
female:
superficial transverse perinei (same)
ischiocavernosus muscle (same)
bulbospongiosus muscle (fx: compress vaginal orifice; assist w erection, expresses secretions of greater vestibular gland)

Question 15

Pelvis Muscles
Lateral Musculature- MIDDLE urogenital triangle of perineum

Functions

Answer 15

male:
deep transverse perinei muscle (fx: stabalize pelvic floor by pulling on perineal body)
external urethral sphincter (fx: close urethra; assist w ejaculation)
female:
sphincter urethrovaginalis (fx: close urethra)
compressor urethrae muscle (fx: in name)
external urethral sphincter (fx: elongate/compress urethra)

Question 16

Pelvic Cavity: name boundaries
Upper
Wall
Floor

Answer 16

Upper: bottom of peritoneal sac; pelvic inlet
Wall: Sacrum, pubis, ischium and inferior most aspect of ilium
Floor: internal muscle layer: levator ani’s and ischiococcygeus
contents: repro’s, bladder, rectum

Question 17

Perineum

Regions:

Answer 17

Ischioanal fossa: pudendal VAN
Deep perineal pouch or space: deep transverse perineal muscle (urethral muscles of male and female)
Superficial perineal pouch: crura and bulbs, SIB muscles
Integument

Question 18

Blood Vessels of the Pelvis:
Internal Iliac Arteries (6)
II OILS

Answer 18

Iliolumbar
lateral sacral
superior gluteal
inferior gluteal
obturator artery
internal pudendal

Question 19

Blood Vessels of the Pelvis:
Visceral branches of the Internal Iliac (5)

oVum

Answer 19

Middle Rectal
Superior / Inferior Vesical
Uterine
Obliterated umbilical

Question 20

Innervation of Pelvis:
Body Wall Nerve (1)
Visceral (Sympathetic and Parasympathetic)

Answer 20

BW: Pudendal Nerve (of sacral plexus and S2-4)
Visceral: sympathetic splanchnic and parasympathetic splanchnic from S2, 3, 4