Arteries and innervation of anterior abdominal wall Flashcards Preview

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Flashcards in Arteries and innervation of anterior abdominal wall Deck (43):
1

Superior Epigastric A

anastomoses with Inferior epigastric a. in rectus abdominis muscle

branches from internal thoracic

deep arterial supply

2

Inferior Epigastric A

branches from external iliac a

anastomoses with superior epigastric a. in rectus abominis m

deep arterial supply

3

Musculophrenic A

arises from internal thoracic a, runs along costal margin

deep branch

4

posterior intercostal a 10-11 and subcostal a

arise from thoracic aorta, lie between transversus abdominis and internal oblique

enter rectus sheath to anastomose with epigastric arteries

5

Lumbar arteries

abdominal counterparts to intercostal

four on each side L1-L4

deep branch

6

Deep Circumflex A.

arises from external iliac a.

anastomoses with lower intercostal a.s by ascending branch

deep branch

7

superficial circumflex iliac a.

arise from femoral a., run in superficial fascia

8

superficial epigastric a

goes to umbilical region

arises from femoral a

runs in superficial fascia

9

external pudendal a

goes to suprapubic, pubic, and genital regions

arises from femoral a

superficial blood supply

10

superficial drainage of of skin and subcutaneous tissue, general of superior region

drain superiorly to axillary vein via thoracic and thoracoepigastric veins

11

caput medusa

distended paraumbilical veins inside camper's fatty tissue

12

superficial drainage of of skin and subcutaneous tissue, general of inferior region

drains inferiorly to femoral v through tributaries

13

deep draining of muscular wall

tributaries of subclavian
tributaries of IVC
tributaries of external iliac
tributaries of azygous

subclavian receive:
musculophrenic and superior epigastric v

IVC receives
lumbar veins

external iliac receives
inferior epigastric
deep circumflex iliac

azygous system
posterior intercostal and subcostal

14

Sensory dermatomes

T7-T11

arise from intercostal n

15

Sensory dermatomes

T12

subcostal n

16

Sensory dermatomes

L1-L4

originate from lumbar plexus

17

Thoracoabdominal intercostal nerves arise from ____ vertebra

T7-T12

18

Thoracoabdominal intercostal nerves

innvervates rectus abdominis
supplies skin, muscles, and parietal peritoneum

branch to form lateral cutaenous branches

arise at about anterior axillary line
pierce abdominal muscles to reach dermis

19

L1-L4

lumbar ns

20

T12

subcostal n

21

T7-T11

intercostal ns

22

T7 is ___regions

xiphoid region

23

T10 is ____region

umbilical region

24

L1 is ____ region

inguinal fold region

25

where in general do anterior abdominal wall muscles lie?

between abdominal internal oblique and transversus abdominis

they pierce rectus sheath to innervate rectus abdominis muscles

26

what in general do anterior abdominal wall muscles innervate?

rectus muscle, skin, and PARIETAL PERITONEUM

27

L1 and L2 are part of the

lumbar plexus

28

Iliohypogastric n

L1
sometimes involves T12

29

ilioinguinal n.

L1

genitofemoral n. L1 and L2

30

genitofemoral n.

L1 and L@

31

iliohypograstric n

L1 and sometimes T12

exits posterior abdominal wall between quadratus lumborum and psoas m.

enters abdominal wall and runs between muscles- exits to become cutaneous

LATERAL cutaneous branch

ANTERIOR cutaneous branch (supplies suprapubic region)

32

ilioinguinal n

L1

exists posterior abdominal wall between quadratus lumborum and posas m.

enters inguinal canal. emerges through superifical inguinal ring

supplies groin, thigh, scrotum/labium major

33

Genitofemoral nerve

L1 and L2

Exits posterior wall THROUGH psoas m.
runs between psoas and peritoneum

34

Genital branch of genitofemoral nerve

externs inguinal canal through the deep inguinal ring and exists the inguinal canal through the superifical inguinal ring


innervates cremaster muscle or is cutaneous to the labium majus

35

femoral n.

exits inferior to the inguinal ligament
cutaneous to the femoral triangle area

36

Iliohypogastric n: pierces what muscle, runs between what two muscles, sends a branch where, communicates with whom, and terminates where

what major cord does it run down?

pierces internal oblique and superior to the ASIS
runs between IO and EO muscles

sends a lateral branch to the skin of the gluteal region

innervates anterolateral abdominal muscles

communicates with iliioinguinal n.

runs on surface of spermatic cord or round ligament of uterus

emerges through superficial inguinal ring

terminates as anterior cutaneous branches to hypogastric (suprapubic regions)


37

Ilioinguinal n

runs on the surface of what cord

emerges where

supplies innervation to what structures

surface of spermatic cord or round ligament of uterus
emerges from superficial inguinal ring
supplies skin of groin and scrotum/labium majus

38

genitofemoral n.

L1/L2

exits intervertebral forament and runs through the psoas m.

divides into genital branch and femoral branch either within the muscle or after emerging from the muscle

39

genital branch runs through

deep inguinal ring, passes through inguinal canal and emerges through the superficial ring



40

genital branch supplies innervation to whom

to cremaster m. and skin of scrotum in men

genital branch supplies the skin of the labia majora in females

41

femoral branch of the genitofemoral nerves exits what
innervates what

the abdomen inferior to the inguinal ligament, sometimes through the femoral seath

femoral branch supplies the skin of the thigh over the femoral triangle

42

umbilical hernia: in infants

involves umbilicus
scar of umbilicus does not heal over completely

usually heals on its own spontaneously

small and wider transversely

43

umbilical hernia: in adults

results from weakened abdominal wall around umbilicus
more common in women
requires surgical repair
usually superior to umbilical scar