Download SESSION 6 - Pharynx, Temporomandibular Joint, Muscles Of

SESSION 6 - Pharynx, Temporomandibular Joint,
Muscles Of Mastication & Infratemporal Fossa
1. During swallowing, how do we prevent food entering the larynx?
2. What is the name of the fascia that holds the nasopharynx open?
3. Which part of which constrictor muscle is a complete sphincter and only opens
during swallowing?
4. How does the nerve supply for this muscle vary from the other constrictors?
5. What may happen during vomiting when this muscle fails to open for the
upcoming bolus of stomach contents?
6. Name 4 muscles that directly or indirectly raise the pharynx/larynx for
swallowing?
7. What is the most important factor for opening the mouth?
8. Why is the temporomandibular joint said to be "atypical"?
9. Onto what part of what bone does the condyle of the mandible slide forwards
when the mouth is opened?
10. If this forwards slide is necessary for the mouth to open, then which muscle is
responsible for mouth opening?
11. If the mouth opened by simple rotation only what two problems would arise?
12. What is the axis around which the mandible rotates when the mouth opens?
13. Does true rotation of the temporomandibular joint occur in the upper or lower
compartments that are created by the fibrocartilaginous disc?
14. According to Hilton's law, what is the likely nerve supply of this joint?
15. Name three internal features of the nasopharynx.
16. Name three internal features of the oropharynx.
17. Name two internal features of the laryngopharynx.
18. What is the nerve supply of the laryngopharynx.
19. How many entries and exits are there for the whole pharynx?
20. What is the main difference in action between the medial and lateral pterygoid
muscles?
21. Which muscle of mastication do you need to contract hard to feel the parotid
duct rolling over it?
22. How do the anterior and posterior fibres of temporalis differ in their action?
What function do they have in common?
23. During chewing, how do we achieve side to side (grinding) movement of the
mandible?
24. You are looking into the infratemporal fossa. Apart from muscles what four
other structures might you hope to see?