oral and nasal cavity

Question 1

what is the vestibule

Answer 1

the part of mucosa that attaches the upper lip to the gum of the teeth

Question 2

where is the oral cavity proper

Answer 2

behind the teeth

Question 3

what is the uvula innervated by

Answer 3

Vagus CN X- elicits gag refled

Question 4

pillers at the back of the oral cavity proper and what is in between them

Answer 4

there are two pillars of mucosa, the front one is the palatoglossal arch (goes from the soft palate to the tongue_
the one in the back is the palatopharyngeal arch ( goes from the soft palate to the pharynx). in between the twwo arches is the palatine tonsil. The palatine tonsil is a part of the lymphatic tissue all around the naso pharynx which fights off foreign invaders

Question 5

oral cavity and other major compartments (sinuses)

Answer 5

Cranial vault contains the brain, external ear, orbis

air filled sinuses: frontal sinus–>embedded in the frontal bone
maxillary sinus–>just under the eye embedded in maxila
oral cavity
nasal cavity
and vestibule

Question 6

Torus tubaris

Answer 6

where Eustachian tube enters the nasopharynx with middle ear, its an elevated bump of mucosa. Most prevalent in peds. to open you have to open muscles of the soft palate

Question 7

turbinate bones

Answer 7

nasal conchae that slow down air movement to warm up or cool down the air thats being inhaled

Question 8

waldeyer’s ring

Answer 8

composed of immunocompetent lymphatic tissue (tonsils and lymph follicles). The tonsils are immunological sentinels surrounding the passageways from the mouth and nasal cavity to the pharynx (the blue dots all over the pharynx in that slide)

Question 9

the hard palate

Answer 9

made up of two bones: the maxilla anteriorly and the palatine bone posteriorly separated by a suture line,
has an
*incisive foramen that carries nasopalatine nerve and nasopalatine vessels
*greater palatine foramen that carries greater palatine nerve and vessels (serve hard palate)
*lesser palatine foramen that carries lesser palatine nerve and vessels (serve soft palate)

Question 10

innervation of the maxilla

Answer 10

infraorbital nerve (CN V (v2)
has a posterior middle and anterior superior alveolar nerves which: the posterior superior alveolar nerve innervates the posterior 2.5 molars, the anterior sup. alv ne. innervates the first 3 teeth, and the middle alveolar innervates the middle 2.5 (so just remember 3, 2.5, 2.5)

vestibular innervation: kinda the same

Question 11

muscles of the soft palate

Answer 11

1. Tensor veli palatini (V3)
2. Levator veli palatini
3. usculus uvalae
4. Palatoglossis
5. Palatopharynges
   2-5 innervated by the vagus nerve

Question 12

hard palate arteries

Answer 12

Greater palatine (maxillary
sphenopalatine (maxillary)

Question 13

Soft palate arteries

Answer 13

lesser palatine arteries (maxillary)
ascending palatine (facial)
palatine artery (ascending pharyngeal)
Dorsal lingual (lingual

Question 14

muscles of the cheeks

Answer 14

buccinator (CN VII) terminates that the pterygomandibular raphe (anesthesia for inferior alveolar and lingual) then becomes the superior constrictor

Question 15

innervation of mandible

Answer 15

lingual nerve innervates floor of mouth, inferiot lingual gingiva and anterior 2/3 pf tongue

V3 gives off branches
Buccal branch: vistibule region of the posterior 3 molars
Inferior alveolar mental branch: the rest of the teeth
Inferior alveolar dental branch: posterior 5 teeth
Inferior alveolar Incisive branch: first 3 teeth

Question 16

the tongue extrinsic muscles

Answer 16

(genioglossus, hyoglssus. styloglossus,)- XII

and palato glossus- X

Question 17

GSA(somatic senstation) and SA (taste) innervation of tongue

Answer 17

Anterior 2/3: GSA- lingual (br of mandibular CN V3) SA- facial (chorda tympani)
Post 1/3: both glossopharyngeal
Epiglottis region:both vagus