Diaphragm it is

Diaphragm, Inferior Aspect. I. Anterior and middle leaflet of central tendon. 2. Right leaflet. 3 Left leaflet 4. Right crus. 5. Left crus. 6, 6. Intervals for phrenic nerves. 7. Muscular fibers, from which the ligament a arcuata originate. 8. Muscular fibers that arise from the inner surface of the six lower ribs 9. Fibers that arise from ensiform cartilage. 10. Opening for inferior vena cava. 11. Opening for esophagus. 12. Aortic opening.!3- Upper portion of transversal is abdominis, turned upward and outward 14. Anterior leaflet of transversal is aponeurosis. 15, 15. Quadratus lumborum. 16, 16. Psoas magnus. 17. Third lumbar vertebra. (di-af-rag-mi'-tis). See Diaphragmatitis.