intra and extra oral surface

Question 1

describe the structure of facial skin

Answer 1

very little deep fascia

Question 2

where are the muscles of facial expression found

Answer 2

superficial fascia

Question 3

what are the muscles of facial expression

Answer 3

frontalis
orbicularis oculi
quadratus superioris
orbicularis oris
platysma

Question 4

what are all the muscles of facial expression innervated by

Answer 4

CNVII

Question 5

what is the muscles of mastication innervated by

Answer 5

CN V3

Question 6

what are the muscles of mastication

Answer 6

temporalis
masseter
lateral pterygoid
medial pterygoid

Question 7

what are the salivary glands and where are they located

Answer 7

parotid gland - superficial to masseter
sublingual ducts
sublingual gland - in floor of mouth
submandibular duct - in floor of mouth
submandibular gland deep and superficial

Question 8

what are the paranasal sinuses

Answer 8

frontal sinus
ethmoidal cells
maxillary sinuses
sphenoidal sinus

Question 9

what does the lacrimal apparatus do

Answer 9

produces tears

Question 10

what is the philtrum

Answer 10

groove in midline above upper lip

Question 10

what are the parts of the lacrimal apparatus and the route it takes

Answer 10

lacrimal gland produces lacrimal fluid
washes over eye towards medial angle
drains through lacrimal puncta into canaliculi, lacrimal sac and eventually reaches nasal cavity through nasolacrimal duct

Question 11

what is the commissure

Answer 11

crevice at side of mouth

Question 12

what is the mucose on inside surface of lip and cheek

Answer 12

lip - labial mucosa
cheek - buccal mucosa

Question 13

what is the tongue made of
what is it covered in

Answer 13

skeletal muscle
lingual mucosa

Question 14

describe the anatomy of the tongue

Answer 14

anterior 2/3rds
-horizontal in oral caviity freely movable

posterior 1/3rd
- vertical, not in oral cavity, fixed

terminal sulcus
- v shaped separates anterior and posterior of tongue

foramen caecum
- origin of thyroid gland at apex of terminal sulcus

Question 15

describe the anatomy of the floor of the mouth

Answer 15

lingual vein - anterior of tongue
sublingual papillae - opening for submandibular salivary glands ducts
mucosa of floor of mouth - very thin
left sublingual fold - either side of frenulum

frenulum - tongue tie, binds tongue to gingiva of lower incisor teeth

Question 16

what are the functions of the trapdoor

Answer 16

1. stops food entering the nose
   during swallowing
2. directs air into the nose or the
   mouth during speech,
   sneezing, coughing & vomiting
3. helps to close off the entrance
   into the oropharynx
   during the gag reflex