Male and Female Pelvis and Perineum Flashcards Preview

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Flashcards in Male and Female Pelvis and Perineum Deck (102)
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1

perineum division

line connecting ischial tuberosities

anal triangle
UG triangle

2

boundaries of anal triangle

anterior - posterior edge of UG diaphragm
posterolateral - ischial tuberosities and sacrotuberous ligament
posterior - coccyx

3

contents of anal triangle

anal canal
ischioanal fossa
vessels and nerves to perineum

4

external anal sphincter

voluntary muscle surrounding anal canal

5

divisions of anal triangle

subQ - circular fibers
superficial - tendon of perineum to coccyx
deep - encircles anal canal

6

attachment of tendon of perineum to coccyx

central tendon male
perineal body female

7

currugator cutis ani

superficial of external anal sphinchter

8

ischioanal fossa

below levator ani muscle
-between superficial anal triangle and pelvic diaphragm

posteriorly - left and right communicate
anterior - separation by anterior recesses

9

anterior ischioanal fossa

adipose tissue
- continuation of campers fascia

internal pudendal nerves
inferior rectal vessels
internal pudendal nerves

10

internal pudendal artery

1 of 2 terminal branches
-of internal iliac artery

leaves pelvis through greater sciatic foramen
-crosses ischial spine between sacrospinous ligament and sacrotuberous ligament

comes back into perineum via lesser sciatic foramen

11

alcocks canal

aka pudendal canal
-split of obturator fascia
-contains internal pudendal vessels and pudendal nerve

12

branches of internal pudendal artery

in ischioanal fossa
-inferior rectal - 1st branch
-perineal artery - 2nd branch
-deep and dorsal arteries of penis (clitoris)

13

inferior rectal artery

supplies sphincter, anal canal, skin of anus

first branch of internal pudendal artery

14

perineal artery

2nd branch of internal pudendal artery

arises - posterior edge of UG
-branches further:
-transverse perineal arteries
-posterior scrotal artery - males
-posteior labial artery - females

15

perineal artery blood supply to?

superficial perineal and deep perineal mm.

16

posterior scrotal (labial) artery

end branch of perineal artery from internal pudendal artery

17

terminal branch of internal pudendal arteries

deep and dorsal arteries of penis (clitoris)

18

nerves of anal triangle

similar to arterial distribution

pudendal nerve - S2-4
-same course as internal pudendal arteries

19

branches of pudendal nerve

inferior rectal nerves
perineal nerve
dorsal nerve of penis

20

perineal branches of posterior femoral cutaneous nerve

innervate lateral aspect of anal and UG regions
-down onto medial thigh

21

UG triangle borders

anterior - pubis
lateral - ischiopubic ramus
posterior - dorsal edge UG diaphragm
superior - pubococcygeus of levator ani (pelvic diaphragm)

22

male UG triangle

pierced by urethra
-sphincter urethrae m. and compressor urethrae m.

posterior edge - deep transverse perineal m. and superficial transverse perineal m.

23

insertion of superficial perineal m. in male?

central tendon

24

superficial UG diaphragm fascia

from transversalis fascia

25

inferior UG diaphragm fascia

from colles fascia

aka perineal membrane

26

deep perineal space

space between perineal membrane and superior perineal fascia

27

superficial perineal space in male

penis
bulbospongiosus
ischiocavernosus
scrotum

28

penis

male copulatory organ
-superficial fascia with overlying skin
-3 bodies

29

corpus spongiosum

along midline
-adherent to inferior fascia of UG diaphragm

contains urethra

enlarge proximal end - bulb of penis
enalrged distal - glans penis
-limited erectile function (mostly glans)

30

corpus cavernosa

2x
-start lateral and converge toward middle
-crura of penis - where they meet

anchored at ischiopubic rami
-converge at inferior margin of pubic symphysis**

each contain deep artery of penis
-from internal pudendal artery