intra oral and extra oral- anatomy

Question 1

name each extra oral region

Answer 1

Question 2

name each extra oral region

Answer 2

Question 3

at what layer of skin are facial muscles found?

Answer 3

superficial fascia

Question 4

what nerve sends sensory innervation to the skin?

Answer 4

trigeminal nerve

Question 5

what CN is the trigeminal nerve?

Answer 5

CNV

Question 6

what are the 3 divisions of CNV?

Answer 6

CNV 1- ophthalmic divison
CNV 2- maxillary division
CNV 3- mandibular division

Question 7

what does CNV1 supply?

Answer 7

upper region of the face including the eyelids and down the bridge of the nose to the tip of the nose

Question 8

what does CNV2 supply?

Answer 8

mid region of face- inferior eyelids and ala (wings) of the nose and upper lip.

Question 9

what does CNV3 supply?

Answer 9

lower region of the face including the lower lip.

Question 10

what nerve innervates the muscles of facial expression?

Answer 10

CNVII- facial nerve

Question 11

name the muscles of facial expression in the picture.

Answer 11

Question 12

what nerve innervates muscles of mastication?

Answer 12

CNV 3- mandibular division

Question 13

name the muscles of mastication in the picture.

Answer 13

Question 14

what muscles of mastication elevate the mandible?

Answer 14

-temporalis
-massester
-medial pterygoid

Question 15

name the salivary glands and ducts in the picture.

Answer 15

Question 16

where does the parotid duct enter the mouth?

Answer 16

at the upper 2nd molar

Question 17

what artery supplies the face?

Answer 17

facial artery

Question 18

where does the facial artery branch from?

Answer 18

the external carotid artery

Question 19

what vein drains the face?

Answer 19

facial vein

Question 20

where does the facial vein drain into?

Answer 20

internal jugular vein via the common facial vein

Question 21

what is the name of the lymphatic drainage system of the face?

Answer 21

superficial ring of regional lymph nodes- occipital, mastoid, parotid, submandibular, submental.

Question 22

name the paranasal sinuses in the picture

Answer 22

Question 23

name the paranasal sinuses in the picture

Answer 23

Question 24

name each part of the mouth.

Answer 24

Question 25

the TMJ is formed by the articulation of what?

Answer 25

condylar head of mandible and glenoid fossa of the temporal bone

Question 26

name these parts in the picture.

Answer 26

Question 27

what is the tongue made up of?

Answer 27

skeletal muscle covered by lingual mucosa

Question 28

what is the tongue divided into?

Answer 28

ant 2/3rd and post 1/3rd

Question 29

what are the differences between the ant and post of the tongue?

Answer 29

ant- in oral cavity and freely moveable - horizontal

post- not in oral cavity and fixed - vertical

Question 30

what is the name of the line that splits the ant and post parts of the tongue?

Answer 30

the terminal sulcus

Question 31

name the papillae on the tongue in the picture.

Answer 31

Question 32

what papillae are for touch not taste?

Answer 32

filiform papillae

Question 33

name these parts.

Answer 33

Question 34

what happens when the frenulum is too short?

Answer 34

tongue tied- where frenulum is attached to the gingivae of the lower incisors

Question 35

name these parts of the hard palate.

Answer 35

Question 36

name these parts of the hard palate mucosa

Answer 36

Question 37

how does the mucosa of the hp and sp differ?

Answer 37

hard palate- keratinised stratified squamous epithelium

sp- non keratinised stratified squamous epithelium- skeletal muscle

Question 38

what does the soft palate act as?

Answer 38

a trapped door

Question 39

what are the 3 functions of the soft palate/

Answer 39

• prevent food entering nose when swallowing
• directs air into nose or mouth during speech, sneezing, coughing
• closes entrance to oropharynx during gag reflex