oral cavity

Question 1

what does the oral region include?

Answer 1

oral cavity (mouth), teeth, gums, tongue, palate, region of palatine tonsils

Question 2

what are the two parts of the oral cavity?

Answer 2

oral vestibule & oral cavity proper

Question 3

the orbicularis oris controls what?

Answer 3

oral fissure size, size of the mouth

Question 4

boundaries of the oral cavity proper

Answer 4

superior- palate
posterior- oropharynx
anterior- oral vestibule (teeth)

Question 5

what cranial nerve is the orbicularis oris?

Answer 5

CN VII

Question 6

palate

Answer 6

arched roof of the oral cavity proper and floor of the nasal cavities

Question 7

hard palate

Answer 7

formed by parts of the maxillae and palatine bones, covered by mucous membrane, filled with the tongue at rest (general sensory)

Question 8

soft palate

Answer 8

movable posterior 1/3 of the palate, continuous with the wall of the pharynx & jointed with the tongue & pharynx

Question 9

uvula

Answer 9

extends postero-inferiorly as a curved free margin with a conical process

Question 10

what joins the soft palate with the tongue and pharynx?

Answer 10

palatoglossal and palatopharyngeal arches

Question 11

what role does the soft palate have?

Answer 11

swallowing (digestion), elevate palate to receive food when chewing or tongue is moving

Question 12

where do the muscles of the soft palate originate?

Answer 12

the cranial base which then descends towards the palate

Question 13

what do the muscles of the soft palate do?

Answer 13

tense and elevate palate during swallowing and yawning

Question 14

what are the muscles of the soft palate?

Answer 14

tensor veli palatini, levator veli palatini, palatoglossus, palatopharyngeus, musculus uvulae

Question 15

tongue

Answer 15

mobile muscular organ

Question 16

what is the function of the tongue?

Answer 16

assist in mastication, taste, swallowing, speech, oral cleaning

Question 17

what do extrinsic tongue muscles do?

Answer 17

alter the position of the tongue (sticking out), muscles attach to face and insert into tongue

Question 18

what do intrinsic tongue muscles do?

Answer 18

regulate shape, originate in tongue and insert in itself

Question 19

motor innervation of the tongue

Answer 19

all tongue muscles- CN XII except for palatoglossus (soft palate muscle CN X)

Question 20

salivary glands and their cranial nerve

Answer 20

parotid (CN IX), submandibular (CN VII), sublingual (CN VII)

Question 21

what is the function of the salivary glands?

Answer 21

keep the oral mucous membranes moist, lubricate food during mastication, support ability to taste

Question 22

what are the muscles of mastication? what cranial nerve are they innervated by?

Answer 22

temporalis, masseter, medial & lateral pterygoids, CN V3

Question 23

temporalis & masseter

Answer 23

elevate mandible, bring teeth closer together

Question 24

lateral & medial pterygoid

Answer 24

side to side movements, mandibular elevation