Figure 3
Normal computed tomographic anatomy of the head of the green iguana. A. Photograph of the head of an iguana; lines (1–3) indicate the approximate levels of matched cross-sections and CT images. B- J: Matched images of cross-sectional gross anatomy ( B- E- H), CT image displayed in bone window (WW: +2000; WL: +500) ( C- F- I) and CT image displayed in soft tissue window (WW: +400; WL: +40)( D- G- J) corresponding to: line 1 ( B- C- D), line 2 ( E- F- G) and line 3 ( H- I- J) as depicted in Figure 3A. R is right and Ve is ventral. B- C- D: 1. Nasal bone; 2. Prefrontal bone; 3. Stammteil; 4. Nasal septum; 5. Nasal glands; 6. Subconchal recess; 7.Vomer bone; 8. Choanal tube; 9. Maxillary bone; 10. Cavum oris; 11. Dentary bone; 12. Meckelian fossa; 13. Entoglossal process of the basihyal bone; 14. Musculus geniohyoideus + Musculus hyoglossus + Musculus intermandibularis; 15. Tongue. E- F- G: 1. Frontal bone; 2. Brain; 3. Harderian gland; 4. Choroid plexus; 5. Interorbital septum; 6. Vitreous humor; 7. Lens; 8. Sinus orbitalis; 9. Maxillary bone; 10. Palatine glands; 11. Palatine bone; 12. Dentary bone; 13: Entoglossal process of the basihyal bone; 14. Tongue; 15. Musculus geniohyoideus + Musculus hyoglossus + Musculus intermandibularis; 16. Cavum oris; 17. Scleral ossicles. H- I- J: 1. Parietal bone; 2. Brain; 3. Vena cerebralis media; 4. Sphenoid bone; 5. Angular bone + Surangular bone; 6. Hyobranchial skeleton; 7. Musculus intermandibularis + Musculus genioyhoideus + Musculus hyoglossus + Musculus pterygoideus + Musculus omohyoideus + Musculus stermohyoideus + Musculus ceratohyoideus; 8. Trachea; 9. Oesophagus; 10. Musculus adductor mandibulae externus medialis; 11. Musculus adductor mandibulae externus superficialis; 12. Adductor fossa.