Pelvis Anatomy Flashcards Preview

MED 2042 Wks 1-5 > Pelvis Anatomy > Flashcards

Flashcards in Pelvis Anatomy Deck (16)
Loading flashcards...
1

Boundaries of pelvic inlet

Sacral promontory
Ala of sacrum
Sacroilliac joint
Arcuate line of ileum
Pectinal line of pubis
Pubic crest
Pubic symphysis

2

Muscles of false pelvis

Psoas
Illiacus
Anterior abdo muscles

3

Diagonal conjugate

13.5cm
Sacral promontory to underside of pubic symphysis

4

True obstetric conjugate

11.5 cm
Sacral promontory to closest pnt on pubic symphysis
Shortest AP line in true pelvis
FIXED-Shortest fixed distance that cant move during delivery is the obstertric conjugate

5

Water underbridge

Ureters pass under uterine artery

6

Job of s2,3,4 pudendal

Perineum
Sensory to external genitalia
S3,4 supplies levator ani
Extern/inter sphinctors

7

rectal blood supple

top 1/3- drains to liver via hepatic portal vein
bottom 2/3-drains to systemic via IVC

8

layers of uterus

peritmetrium
myometrium
endometrium

9

deep perineal pouch

bw SUPERIOR UROGENITAL FASCIA and PERINEAL MEMBRANE.
Has the transverse perineal muscle and sphintor urethrae in it

10

superficial perineal pouch

bw PERINEAL MEMBRANE and COLLES FASCIA

11

bleeding into deep pouch

rupture of membranous/intermediate urethra
fracture of pelvic girdle

12

bleeding into superficial pouch

rupture of spongy urethra

straddle injury or incorrect catheter insertion

13

pelvic outlet

tip of coccyx to pubic symphysis
sacrotuberous ligaments
ishcial tuberosities
inferior border of ischiopubic ramus

14

plane of least dimentions

Anterior-posteriorly, it is from pubic symphysis to S4. Laterally, it is bw the ischial spines

15

MIDPELVIS/INTERSPINOUS

• the horizontal line bw the ischial spines
12 cm
in birth: shortest is true obstetric
in non pregnant: shrotest is interpinous

16

TRANSVERSE DIAMETER

• Line horizonatally bw the ischial tuberosity
• ~13.5cm
• changed with parturition