University:
Indiana University South Bend
Course:
ANAT-A 210 | Human Anatomy
Academic year:

2024
Views:

304

Pages:

2
Author:

Rifa K

Origin Sternal: Xiphoid process Costal: Inner aspect of lower 6 ribs Vertebral: T12 & L1 crus; medial arcuate ligament (thickening of fascia of quadratus lumborum), lateral arcuate ligament (lateral border of psoas major) Insertion Central tendon: Passes through the caval opening (T8), esophageal hiatus (T10), aortic hiatus (T12), and vena caval opening (T8) Openings of Diaphragm T8: Esophagus, right & left vagus nerves T10: Aorta, azygos vein, thoracic duct, right & left phrenic nerves T12: Inferior vena cava, right & left splanchnic nerves Posterior Abdominal Wall Formed from: Posterior rami of lumbar spinal nerves, psoas major muscle, quadratus lumborum muscle, iliacus muscle, transversus abdominis muscle, internal oblique muscle, external oblique muscle, linea alba, and rectus sheath. Lumbar Plexus L1-L5 Lumbo-sacral trunk Sacral nerves Coccygeal nerves Nerves Iliohypogastric nerve Ilioinguinal nerve Lateral femoral cutaneous nerve Femoral nerve Obturator nerve