384 THE MUSCLES. 



C. Hyoid. 



The hyoid gives insertion to the following muscles : — 



a. By its body and its thyroid cornua — 



1. Sterno-hyoideus. 



2. Subscapulo-hyoideus. 



3. Mylo-hyoideus. 



4. Genio-hyoideu8. 



5. Stylo-hyoideus. 



6. Hyoideus magnus. 



7. Hyoideus transversuB. 



6. By its branches (styloid cornua and styloid honeay— 



1. Stylo-hyoideus. 



2. Hyoideus magnus. 



3. Ocoipito-styloideus. 



III. Bones of the Thorax. 

 A. The Ribs and their Cartilages. 



The ribs and costal cartilages give attachment to seventeen muficlee :— 



1. Scalenus (Ist). 



2. Serratus anticus (5tli to 9th). 



3. Serratus po.sticus (9tli to 18th). 



4. Longissimus dorsi (3rd to 18th). 



5. Transversalis costarum. 



6. Psoas magnus (17th to 18th). 



7. Quadratus lumborum (16th to 18th). 



8. Serratus magnus (1st to 8th). 



9. External iutercustals. 



10. Intenial intercostals. 



11. Levatores costarum. 



12. Triangularis stemi (2nd to 8tb). 



13. Obliquus abdominis externus (5th to 18th). 



14. Obliquus abdominis intemus (asternal cartilages). 



15. Rectus abdominis (asternal cartilages). 



16. Transversalis abdominis. 



17. Diaphragm (7th to 18th). 



B. Sternum. 



The sternmn gives attachment to nine muscles :— 



1. Panniculus cervicalis of the neck. 



2. Sterno-maxlllaris. 



3. Sterno-thyro-hyoideus. 



4. Superficial pectorals. 



5. Deep pectorals. 



6. Triangularis sterni. 



7. Rectus abdominis. 



8. Transversalis abdominis. 



9. Diaphragm. 



