Abdomen Flashcards
Midway between umbilicus and pubic crest
Arcuate line
Below arcuate line, post wall of Rectus sheath is formed by
Transversalis fascia
Contents of Rectus sheath
Rectus abdominis Pyramidalis Superior epigastric vessels Inferior epigastric vessels Lower 5 intercostal and subcostal vessels and nerves
Blood supply of the abdomen
Superior epigastric: int thoracic
Inferior epigastric: external iliac
Deep circumflex iliac: external iliac
Nerve supply of the abdomen
Ventral rami of the lower 6 thoracic nerves and first lumbar nerve
Hesselbach’s triangle
Sup and lateral: inf epigastric a.
Inf and lat: inguinal lig
Medial: Rectus abdominis
Inguinal canal
Ant: EOM aponeurosis
Post: Transversalis fascia and conjoint tendon
Sup: IO and TA
Inf: Inguinal ligament
Pathogenesis of varicocoele
Dilatations of tributaries of testicular v.
Indirect vs. Direct hernia
Indirect: congenital, lateral to inf epigastric, enters scrotum
Direct: acquired, medial to inf epigastric, never enters the scrotum
Layers of the abdomen
Skin Superficial fascia (Campers, Scarpas) Deep fascia Muscle Transversalis fascia Extraperitoneal fat Parietal peritoneum
Derivatives
Superficial fascia
Dartos muscle
Derivatives
External oblique
External spermatic fascia
Derivatives
Internal oblique
Cremaster muscle
Derivatives
Transversalis fascia
Internal spermatic fascia
Derivatives
Peritoneum
Tunica Vaginalis