Abdomen Flashcards
Dermatomal level of the umbilicus
T10
Vertebral level of the subcostal plane
L3
9 regions of the abdomen
Epigastric Umbilical Hypogastric / pubic R/L hypochondriac R/L lumbar R/L inguinal
Most superficial abdominal muscle; runs obliquely downward and medially
External oblique
Abdominal muscle that runs upward and medial
Internal oblique
Aponeurotic fibers of internal oblique + transversus abdominis
Conjoint tendon
Crescentic border on the posterior wall; midway b/w umbilicus and pubic crest
Arcuate line
Posterior wall of rectus sheath below ASIS
Transversalis fascia
Anterior layer of rectus sheath below arcuate line
Aponeurosis of external, internal oblique and transversus abdominis
Posterior wall of rectus sheath above the arcuate line
Aponeurosis of the transversus abdominis and internal oblique muscle
Anterior wall of the rectus sheath above the arcuate line
Aponeurosis of the external and internal oblique muscle
Contents of rectus sheath
Rectus abdominis
Pyramidalis
Sup and inf epigastric vessels
Lower 5 intercostal and subcostal vessels and nerves
Blood supply and drainage of the rectus sheath
Sup epigastric -from internal thoracic
Inf epigastric -from ext iliac
Deep circumplex -from ext iliac
Boundaries of the inguinal/ Hesselbach’s triangle
Inf epigastric a.
Inguinal/Poupart’s ligament
Rectus abdominis
Contents of the inguinal CANAL
Spermatic cord/ round ligament
Ilioinguinal nerve