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Flashcards in export_pelvis ii Deck (31):
1

Retropubic space

"Space of Retzius"
Behind pubis, accommodates bladder distention

2

Retrorectal space

Behind rectum, accommodates rectal expansion

3

Retrovesical pouch

Between bladder/prostate and rectum

4

Vesicouterine pouch

Between bladder and uterus

5

Rectouterine pouch

"Pouch of Douglas"
Between uterus and rectum - accessed via posterior fornix

6

Divisions of the internal iliac a.

Anterior
Posterior

7

Anterior division of the internal iliac a.

Umbilical a.
Obturator a.

Inferior vesicular a.

Middle rectal a.

Internal pudendal a.

Inferior gluteal a.

Uterine a.

8

Umbilical a. branches

Umbilical a. -> superior vesicular a. -> artery to ductus deferens

9

Uterine a. branches

Vaginal a.

10

Posterior division of internal iliac a.

Iliolumbar a.
Lateral sacral a.

Superior gluteal a. (SOMETIMES from anterior division - variable)

11

Lumbar plexus branches to pelvis

Lumbosacral trunk (L4-L5)
Obturator (L2-L4)

12

Levels of accessory obturator

L3-L4

13

Sacral plexus branches

Sciatic n.
Pudendal n.

Superior gluteal n.

Inferior gluteal n.

14

Sciatic nerve levels

L4-S3

15

Sciatic n. divisions

Anterior
Posterior

16

Sciatic n. pathway and innervation

Through the greater sciatic foramen
Supplies lower limb

17

Pudendal n. levels

S2-S4

18

Pudendal n. divisions

Anterior

19

Pudendal n. pathway

Through greater sciatic foramen, then to perineum through lesser sciatic foramen

20

Pudendal n. innervation

Supplies skin and muscles of perineum; main sensory nerve for external genitalia

21

Superior gluteal n. levels

L4-S1

22

Superior gluteal n. divisions

Posterior

23

Superior gluteal n. pathway and innervation

Through greater sciatic n.
Supplies gluteus medius, minimus, and TFL

24

Inferior gluteal n. levels

L5-S2

25

Inferior gluteal n. divisions

Posterior

26

Inferior gluteal n. pathway and innervation

Through greater sciatic foramen
Supplies gluteus maximus

27

Coccygeal plexus source

Ventral rami of S4-S5 and coccygeal n.

28

Ganglion impar

End of the sympathetic trunk
4 ganglia bilaterally on the anterior sacrum converge here

29

Flow of sympathetics for pelvis

Arise from T11-L2
Pass through sympathetic chain

Through lumbar and sacral splanchnic n.

Synapse in inferior mesenteric ganglion

Postsynaptics through superior hypogastric plexus, R/L hypogastric n., and/or the inferior hypogastric plexus

Follow pelvic a. to their target organs

30

Flow of parasympathetics for pelvis

Arise from S2-S4 (pelvic splanchnics)
Ascend through inferior and superior hypogastric plexuses

Follow arteries to target organs

Synapse in ganglia within organ/gut plexuses

Reach targets via short postsynaptic fibers

31

What are the pelvic venous plexuses

Rectal
Vesical

Prostatic

Uterine

Vaginal