Arteries and innervation of anterior abdominal wall

Question 1

Superior Epigastric A

Answer 1

anastomoses with Inferior epigastric a. in rectus abdominis muscle

branches from internal thoracic

deep arterial supply

Question 2

Inferior Epigastric A

Answer 2

branches from external iliac a

anastomoses with superior epigastric a. in rectus abominis m

deep arterial supply

Question 3

Musculophrenic A

Answer 3

arises from internal thoracic a, runs along costal margin

deep branch

Question 4

posterior intercostal a 10-11 and subcostal a

Answer 4

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

enter rectus sheath to anastomose with epigastric arteries

Question 5

Lumbar arteries

Answer 5

abdominal counterparts to intercostal

four on each side L1-L4

deep branch

Question 6

Deep Circumflex A.

Answer 6

arises from external iliac a.

anastomoses with lower intercostal a.s by ascending branch

deep branch

Question 7

superficial circumflex iliac a.

Answer 7

arise from femoral a., run in superficial fascia

Question 8

superficial epigastric a

Answer 8

goes to umbilical region

arises from femoral a

runs in superficial fascia

Question 9

external pudendal a

Answer 9

goes to suprapubic, pubic, and genital regions

arises from femoral a

superficial blood supply

Question 10

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

Answer 10

drain superiorly to axillary vein via thoracic and thoracoepigastric veins

Question 11

caput medusa

Answer 11

distended paraumbilical veins inside camper’s fatty tissue

Question 12

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

Answer 12

drains inferiorly to femoral v through tributaries

Question 13

deep draining of muscular wall

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

Answer 13

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

Question 14

Sensory dermatomes

T7-T11

Answer 14

arise from intercostal n

Question 15

Sensory dermatomes

T12

Answer 15

subcostal n

Question 16

Sensory dermatomes

L1-L4

Answer 16

originate from lumbar plexus

Question 17

Thoracoabdominal intercostal nerves arise from ____ vertebra

Answer 17

T7-T12

Question 18

Thoracoabdominal intercostal nerves

Answer 18

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

Question 19

L1-L4

Answer 19

lumbar ns

Question 20

T12

Answer 20

subcostal n

Question 21

T7-T11

Answer 21

intercostal ns

Question 22

T7 is ___regions

Answer 22

xiphoid region

Question 23

T10 is ____region

Answer 23

umbilical region

Question 24

L1 is ____ region

Answer 24

inguinal fold region

Question 25

where in general do anterior abdominal wall muscles lie?

Answer 25

between abdominal internal oblique and transversus abdominis they pierce rectus sheath to innervate rectus abdominis muscles

Question 26

what in general do anterior abdominal wall muscles innervate?

Answer 26

rectus muscle, skin, and PARIETAL PERITONEUM

Question 27

L1 and L2 are part of the

Answer 27

lumbar plexus

Question 28

Iliohypogastric n

Answer 28

L1 | sometimes involves T12

Question 29

ilioinguinal n.

Answer 29

L1 genitofemoral n. L1 and L2

Question 30

genitofemoral n.

Answer 30

L1 and L@

Question 31

iliohypograstric n

Answer 31

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)

Question 32

ilioinguinal n

Answer 32

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

Question 33

Genitofemoral nerve

Answer 33

L1 and L2 Exits posterior wall THROUGH psoas m. runs between psoas and peritoneum

Question 34

Genital branch of genitofemoral nerve

Answer 34

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

Question 35

femoral n.

Answer 35

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

Question 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?

Answer 36

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)

Question 37

Ilioinguinal n runs on the surface of what cord emerges where supplies innervation to what structures

Answer 37

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

Question 38

genitofemoral n.

Answer 38

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

Question 39

genital branch runs through

Answer 39

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

Question 40

genital branch supplies innervation to whom

Answer 40

to cremaster m. and skin of scrotum in men genital branch supplies the skin of the labia majora in females

Question 41

femoral branch of the genitofemoral nerves exits what | innervates what

Answer 41

the abdomen inferior to the inguinal ligament, sometimes through the femoral seath femoral branch supplies the skin of the thigh over the femoral triangle

Question 42

umbilical hernia: in infants

Answer 42

involves umbilicus scar of umbilicus does not heal over completely usually heals on its own spontaneously small and wider transversely

Question 43

umbilical hernia: in adults

Answer 43

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