BMS 301 Lecture Notes - Lumbar Arteries, Inguinal Hernia, Inguinal Ligament
Document Summary
Superior: lower 4 ribs and costal cartilage, xiphoid process, t10. Inferior boundaries: pelvic diaphragm (sheet of muscle between legs, forms perineum, runs from pubic arch to ischial tuberosities, sacrotuberous ligament, and coccyx) Divided into abdominal (superior) and pelvic (inferior) cavities. Inferior boundary: pelvic inlet (imaginary plane: pubic crest l5/s1) Anterior: superior epigastric artery, lower intercostal arteries, inferior epigastric arteries (branches off external iliacs) Posterior: lumbar arteries (off aorta, roughly 4 pair) Others referred to as flat muscles of abdomen. Fiber direction: superior inferior, lateral medial. All flat muscles connect to each other here. Layers of flat muscles surrounding rectus abdominus muscles. Anterior inferior lateral abdominal wall inguinal region. Oblique canal just superior to inguinal ligament (through wall) Women round ligament of uterus (uterus to labia majora) More common in men (larger canal due to large spermatic cord) Visceral directly attached to gut, parietal attached to wall.
