1. Lingual artery and vein Structures in the floor of the mouth
Muscles of the tongue
Lingual artery and vein
Structures in the floor of the mouth
Glossopharyngeal nerve
Hypoglossal nerve
Kritchai Bespinyowong

2. Muscles of the tongue
Extrinsic muscles
Intrinsic muscles

3. Extrinsic muscles of the tongue
Genioglossus muscle
Hyoglossus muscle
Styloglossus muscle
Palatoglossus muscle

4. Genioglossus muscle

5. Genioglossus muscle

6. Genioglossus muscle
Action
Superior fibers Retract tip of tongue
Middle fibers Protrude tip Inferior fibers of tongue
Safety muscle

7. Genioglossus muscle
Action
Bilateral action Depress center of tongue
Unilateral action Contralateral protrude of tongue

8. Hyoglossus muscle
Styloglossus muscle
Palatoglossus muscle

9. Hyoglossus muscle
Action
Depress side of tongue
Retract tongue

10. Styloglossus muscle
Action
Elevate side of tongue
Retract tongue

11. Palatoglossus muscle
Action
Elevate posterior part of tongue
ทำให้ Isthmus of fauces แคบลง

12. Intrinsic muscles of the tongue
Superior longitudinal muscle
Inferior longitudinal muscle
Transverse muscle
Vertical muscle

13. Intrinsic muscles of the tongue

14. Intrinsic muscles of the tongue

15. Nerve supply of muscles of tongue
Hypoglosal nerve
except palatoglossus muscle that supply by pharyngeal plexus

16. Lingual artery

17. Lingual vein
Venae comitantes
Vena comitans nervi hypoglossi

18. Structures in the floor of the mouth
Mylohyoid muscle
Geniohyoid muscle
Sublingual salivary gland
Submandibular duct
Submandibular ganglion

19. Mylohyoid muscle
Geniohyoid muscle

20. Mylohyoid muscle
Action
Elevate hyoid bone and base of tongue
Elevate floor of mouth
depress mandible
Nerve supply
Mylohyoid nerve

21. Geniohyoid muscle
Action
Elevate hyoid bone and tongue
Nerve supply
C1 โดยผ่านมาทาง hypoglossal nerve

22. Sublingual salivary gland
Submandibular duct

23. Submandibular ganglion

24. Glossopharyngeal nerve

25. Hypoglossal nerve

26. “ จบแล้วขอรับ ”