Pelvis

Question 1

Divergance laterally with the gap in between the urogenital diaphragm

Answer 1

Subfasical space

Question 2

Separates the deep and superficial perineal spaces

Answer 2

Deep perineal fascia (perineal membrane)

Question 3

Separates the superficial perineal and subcutaneous perineal spaces

Answer 3

Colle’s Fascia (superficial perineal fascia)

Question 4

Superior surface of the pelvis

Answer 4

Falase (Greater) pelvis

Question 5

Inferior surface of the pelvis

Answer 5

True (lesser) pelvis

Question 6

Dividing line between the true and false pelvises

Answer 6

Linea Terminalis (Pelvic brim/Pelvic inlet)

Question 7

What cavities does the linea terminalis demarcate?

Answer 7

Peritoneal cavity (into greater pelvis) and pelvic cavity(lesser pelvis)

Question 8

What 3 bony landmarks does the linea terminalis incorporate?

Answer 8

Pubic tubercle, pectineal line, arcuate line

Question 9

Term for the arcuate line and continuation of the pectineal line

Answer 9

Iliopectineal line

Question 10

Elevation on the superior margin of the pubic symphysis which serves as the main attachment site for the inguinal ligament

Answer 10

Pubic tubercle

Question 11

Ridge of bone extending from the pubic tubercle along the superior ramus of the pubis to the level of the acetabulum; lacunar ligament attaches here

Answer 11

Pectineal line

Question 12

Along the medial surface of the ilium from the acetabulum to the sacroiliac joint, posterior continuation of the pectineal line

Answer 12

Arcuate line

Question 13

Separates the greater and lesser sciatic notches

Answer 13

Ischial spine

Question 14

Spans from the anterlateral surface of the sacrum to the ischial spine

Answer 14

Sacrospinous ligament

Question 15

Spans from the posterior surface of the sacrum to the ischial tuberosity

Answer 15

Sacrotuberous ligament

Question 16

Superior gap in the obturator membrane

Answer 16

Obturator canal

Question 17

What does the obturator canal contain?

Answer 17

Obturator artery (off of internal iliac a.), vein, nerve (from L2-L4)

Question 18

Subpubic angle in males and females

Answer 18

Males: 60, females: 85

Question 19

Difference between male and female pelvis

Answer 19

Male: heavier, thicker, more prominent bony markings. Female: wider, shallower, shorter/more everted ischial tuberosities

Question 20

4 borders of the pelvic canal

Answer 20

Pelvis inlet (superior), pubic symphysis (anterior), sacral promontory (posterior), Pelvis outlet (inferior:coccyx)

Question 21

Shape of pelvic inlet in males and females

Answer 21

Males: heart, Females: ovate

Question 22

Medial surface b/t the pelvic inlet and outlet

Answer 22

Wll of the pelvic cavity (obturator foramen, greater/lesser sciatic foramina)

Question 23

2 muscles of the pelvic wall

Answer 23

Piriformis, Obturator internus

Question 24

Innervation of the piriformis

Answer 24

nerve to piriformis (S1/2)

Question 25

Origin and nerve to obturator internus

Answer 25

Origin: obturator membrane, nerve: nerve to obturator internus (L5-S2)

Question 26

What does the piriformis divide the greater sciatic foramen into?

Answer 26

Suprapiriform and infrapiriform foramen

Question 27

Path of the pudendal nerve

Answer 27

(S2-S4) out of infrapiriform foramen inferior to sciatic nerve, loops of ischial spine, passes medially thru lesser sciatic foramen, b/t sacrospinous and sacrotuberous ligs, along inferior margin of obturator internus

Question 28

Space b/t the sacrospinous and sucrotuberous ligaments, that continues down b/t the obturator internus and the obturator fascia

Answer 28

Pudendal canal

Question 29

4 muscles of the pelvic diaphragm

Answer 29

Coccygeus, Iliococygeus, Pubococcygeus, Puborectalis

Question 30

What is the combination of the iliococcygeus, pubococcygeus, and puborectalis called and innervation?

Answer 30

Levator Ani, S3-S4 for all 3 muscles (some pudendal also)

Question 31

triangular muscle located on the anterior surface of the sacrospinous ligament to which it is partially fused, and its innervation

Answer 31

Coccygeus, S4-S5

Question 32

Originates off of the Tendinous arch of the obturator internus and inserts into the coccyx and raphe

Answer 32

Iliococcygeus, S3-S4

Question 33

Thick, midline raphe of the pelvic diaphragm

Answer 33

Anococcygeal ligament

Question 34

Arrangement of the levator ani muscles

Answer 34

Iliococcygeus(Posterior), Pubococcygeus (anterior and slighty superior), Puborectalis (medial)

Question 35

Which muscle forms a sling around the rectum?

Answer 35

Puborectalis

Question 36

2 spaces defined by the puborectalis

Answer 36

Urogenital hiatus, anal hiatus

Question 37

Separates the urogential and the anal hiatus

Answer 37

Prerectal fibers

Question 38

What are the prerectal fibers fused to?

Answer 38

Perineal body

Question 39

What is the "kink" in the anorectal juncture called?

Answer 39

Rectal sling (Perineal Flexure)