Abdominal Wall and Inguinal Region Flashcards
Name the layers of the anterior abdominal wall (superficial to deep)
skin superficial fascia deep fascia muscles + aponeuroses Transversalis (endoabdominal) fascia extraperitoneal fat parietal peritoneum
What makes up the conjoint tendon (falx inguinalis)
combined insertion of the transversus abdominis and internal abdominal oblique
what structure is in median umbilical fold?
urachus
what structure is in the medial umbilical fold?
obliterated umbilical a.
what structure is in the lateral umbilical fold?
interior epigastric a. and v. — Important!
what innervated the anterolateral abdominal cavity muscles?
thoracoabdominal n. (ventral rami T7-T11)
Ilioinguinal n. and iliohypogastric n. (L1)
where do the nerovascular bundles lie in the abdominal cavity?
between IAO and TAO
where does lymph drain above watershed (umbilical) ab wall?
axillary lymph nodes
where does lymph drain below the watershed of ab wall?
to inguinal lymph nodes
what makes up the deep inguinal ring?
aponeuroses of transversalis fascia
what makes up the superficial ring?
EAO aponeuroses
what do the intercrural fibers do?
Formed by TA and IAO
bridge the medial and lateral crus
prevents stretching of superficial ring!
what forms the lateral and medial crus?
aponeuroses of EAO
what innervation does the ilioinguinal n. provide?
anterior and lateral inn. to scrotum
what happens in direct hernias?
goes through the triangle of Hesselbach and hernia is found medial to inferior epigastric a.
