Intro to Pelvis and Perineum

Question 1

ASIS and what lie in same plane?

Answer 1

pubic tubercle

Question 2

Pubic Crest

Answer 2

thickening on anterior part of body of pubis

Question 3

Pubic Tubercle

Answer 3

lateral prominent swelling on pubic crest

Question 4

What makes up the pelvic brim?

Answer 4

1. Promontory and Alae of Sacrum
2. Arcuate Line of Ilium
3. Pectin Pubis
4. Pubic Crest

Question 5

What comes out of the anterior sacral foramina?

Answer 5

ventral rami of sacral spinal nerves

Question 6

shape of pelvic inlet for males?

Answer 6

heart shaped

Question 7

shape of pelvic inlet for females?

Answer 7

oval and rounded

Question 8

pubic arch and subpubic angle difference in male vs. female

Answer 8

male’s narrow; female’s wide

Question 9

Android Pelvis

Answer 9

males

Question 10

Anthropoid Pelvis

Answer 10

males

Question 11

Gynecoid

Answer 11

females

Question 12

Platypelloid

Answer 12

uncommon in both sexes

Question 13

What are the 4 pelvis shapes?

Answer 13

android, anthropoid, gynecoid, platypelloid

Question 14

Pubic symphysis is in horizontal line with which parts of pelvis?

Answer 14

pubic symphysis, ischial spine, tip of coccyx

Question 15

Pelvic Inlet boundaries

Answer 15

pubic crest to sacral promontory

Question 16

Pelvic Outlet boundaries

Answer 16

pubic arch to tip of coccyx

Question 17

Oblique Conjugate

Answer 17

Diameter of the pelvic inlet from the sacroiliac joint of one side to the opposite iliopectineal eminence

Question 18

Interspinous Distance (10 cm)

Answer 18

Distance between 2 ischial spines; normally narrowest, but when woman is ready to deliver, she will secrete relaxin, which softens ligaments and allows pubic symphysis to expand

Question 19

Anatomical Conjugate

Answer 19

Distance between top of pubic symphysis to sacral promontory

Question 20

True (Obstetric Conjugate)

Answer 20

Distance from middle of pubic symphysis to sacral promontory

Narrowest fixed portion of pelvic cavity; cannot be measured directly due to presence of bladder

Question 21

Diagonal Conjugate

Answer 21

Distance from inferior portion of pubic symphysis to sacral promontory

Question 22

How big should the obstetric true conjugate be?

Answer 22

at least 11 cm

Question 23

What kind of joint is the sacroiliac joint?

Answer 23

synovial

Question 24

What kind of joint is the pubic symphysis?

Answer 24

Secondary Cartilaginous w/ fibrocartilage interpubic disc

Question 25

What kind of joints are present in lumbosacral joint?

Answer 25

``` 2° cartilaginous (intervertebral disc connecting L5 & S1) Synovial joints (zygapophyseal/facet joints) between articular processes of L5 &S1 ```

Question 26

Inguinal Ligament

Answer 26

from ASIS to pubic tubercle

Question 27

Lacunar Ligament

Answer 27

deeper fibers of inguinal ligament that pass posteriorly to attach to superior pubic ramus lateral to pubic tubercle

Question 28

Pectineal Ligament

Answer 28

most lateral fibers of lacunar ligament, run along pectin pubis

Question 29

Sacrospinous Ligament

Answer 29

sacrum to ischial spine—forms greater and lesser sciatic foramen with sacrotuberous ligament. Divides greater and lesser while sacrotuberous lines the bottom of lesser.

Question 30

Sacrotuberous Ligament

Answer 30

sacrum to ischial tuberosities

Question 31

What holds together sacroiliac joint?

Answer 31

Anterior and Posterior Sacroiliac Ligaments

Question 32

What connects ilium to lumbar vertebra L5?

Answer 32

iliolumbar ligament

Question 33

Superior Pubic Ligament

Answer 33

connects superior aspect of pubic bodies and interpubic disc, extending as far laterally as pubic tubercles

Question 34

Inferior Pubic Ligament (Arcuate)

Answer 34

connects inferior aspects of pubic symphysis, rounding off subpubic angle as it forms the apex of pubic arch

Question 35

Iliacus Innervation

Answer 35

Femoral N. (L2, L3, L4)

Question 36

Psoas Major Innervation

Answer 36

Ventral Rami of L2, L3, L4 before they come together as femoral n.

Question 37

Obturator Internus Innervation

Answer 37

N. to Obturator Internus (L5, S1, S2)

Question 38

Piriformis Innervation

Answer 38

Ventral Rami of S1, S2

Question 39

Psoas Minor Innervation

Answer 39

L1, L2 ventral rami

Question 40

Levator Ani Innervation

Answer 40

N. to Levator Ani (S4)

Question 41

Coccygeus Innervation

Answer 41

Branches of S4, S5 spinal nerves

Question 42

What are the 3 main branches of the pudendal n?

Answer 42

1. Dorsal N of Penis or Clitoris 2. Deep & Superficial Perineal Nerves 3. Inferior Rectal N.

Question 43

Ilioinguinal N. & Iliohypogastric

Answer 43

L1

Question 44

Genitofemoral

Answer 44

L1, L2

Question 45

Lateral Femoral Cutaneous

Answer 45

L2, L3

Question 46

Femoral N

Answer 46

L2, L3, L4

Question 47

Obturator N

Answer 47

L2, L3, L4

Question 48

Lumbosacral Trunk

Answer 48

connection from L4 to lumbosacral trunk