Abdominal Wall Flashcards
quadrants
cross sections
right lower
right upper
left lower
left upper
regions
sagittal and horizontal
R hypochondriac>epigastric> L hypochondriac
R lumbar > umbilical > L lumbar
R iliac > hypogastric > L iliac
bones of pelvis
ilium
ischium
pubis
boundaries of abdominal cavity
costal arch (rib 6-10) + xyphoid process
to
iliac crest + inguinal ligament
inguinal ligament
from ASIS to pubic tubercule
function of abdominal wall
protect/stabilize contents
trunk rotation and flexion
maintain/control intra-ab pressure (parturition/defacation)
respiration
layers of anterior abdominal wall
skin
subcutaneous fascia
muscular layers w/aponeurotic fascia
transversalis fascia
peritoneum (parietal)
subcutaneous = campers (fat) and scarpas (thin serous fascia)
superficial fascia layers
campers = adipose with cutaneous nerves and blood vessels
scarpas= deep to campers, becomes dartos in scrotum and colles in perineum
external oblique
most superficial
fibers run down to center “hands in pockets”
external oblique O and I
ribs 5-12
to
linea alba + pubic tubercule + ant half iliac crest
internal oblique
deep to external oblique
fibers run up to center “hands in gloves”
internal oblique
O and I
thoracolumbar fascia + 2/3 iliac crest + lateral 1/2 inguinal lig
to
inferior rib 10-12 + linea alba + pecten pubis (conjoint tendon)
rectus abdominis
stereotypical abs
separated by tendonus intersections
deep to external aponeurosis
rectus abdominis
O and I
pubic symphysis + pubic crest
to
xyphoid process + ribs 5-7
transversus abdominis
TA
deepest muscle
fibers wrap back to front
