oral cavity

Question 1

what are the two parts of the oral cavity

Answer 1

oral vestibule (between cheeks and lips and teeth) and oral cavity proper (arch of teeth)

Question 2

what is the posterior boundary of the oral cavity

Answer 2

oropharyngeal isthmus

Question 3

what are the contents of the oral vestibule

Answer 3

Lips, gingivae, upper and lower labial frenula

Question 4

what are the contents of the oral cavity proper

Answer 4

Hard and soft palates, Geniohyoid muscles, mylohyoid muscles Dental arches, Isthmus of fauces

Question 5

what are the 4 types of lingual papillae

Answer 5

filiform papillae
fungiform papillae
foliate papillae
circumvallate papillae

Question 6

what is the lingual papillae

Answer 6

small structures on the upper surface of the tongue that give it its characteristic rough texture

Question 7

what does the chorda tympani innervate

Answer 7

a branch of the facial nerve that carries gustatory (taste) sensory innervation from the front of the tongue and parasympathetic (secretomotor) innervation to the submandibular and sublingual salivary glands.

Question 8

what innervates the taste buds in the inferior surface of soft palate

Answer 8

the facial nerve via the greater petrosal nerve, pterygopalatine nerve and lesser petrosal nerve, sometimes by the glossopharyngeal nerve.

Question 9

what does the glossopharyngeal nerve innervate in oral cavity

Answer 9

Taste buds in the circumvallate papillae, postsulcal part of the tongue and in the palatoglossal arches and the oropharynx

Question 10

what innervates the taste buds in the extreme pharyngeal part of the tongue and epiglottis

Answer 10

the internal laryngeal branch of the vagus nerve

Question 11

what is the front 2/3 of the tongue called

Answer 11

oral presulcal

Question 12

what is the back 1/3 of the tongue called

Answer 12

pharyngeal postsulcal

Question 13

what is the pharyngeal postsulcal part of tongue

Answer 13

base of tongue and posterior to palatoglossal arches

Question 14

what are the extrinsic tongue muscles

Answer 14

hyoglossus, genioglossus, styloglossus and palatoglossus

Question 15

what is the function of the hypglossos

Answer 15

flattens tongue and pulls it down and back

Question 16

what is the function of the genioglossos

Answer 16

compacts tongue and pulls it foward and tips it forward in opposite direction

Question 17

what is the function of the styloglossus

Answer 17

lifts lateral edge and retracts tongue

Question 18

what is the function of the palatoglossus

Answer 18

pulls soft palate down and forward

Question 19

what are the intrinsic tongue muscles

Answer 19

superior longitudinal, inferior longitudinal, vertical, transverse

Question 20

what is the function of the intrinsic tongue muscles

Answer 20

alters tongue shape for handling food and speech

Question 21

what are the intrinsic and extrinsic tongue muscles innervated by

Answer 21

hypoglossal nerve (CN XII)
except the palatoglossus

Question 22

wht is the palatoglossus innervated by

Answer 22

vagus nerve

Question 23

what are the 4 branches of the lingual artery

Answer 23

sublingual,deep lingul, suprahyoid and dorsal lingual artery

Question 24

what is the blood supply of the tongue

Answer 24

lingual artery, branch of external carotid artery

Question 25

where does the geniohyoid muscle originate

Answer 25

inferior mental spine

Question 26

what does the sublingual papilla receive?

Answer 26

sublingual duct

Question 27

what nerve carries sensations of taste from the area of the tongue posterior to the row of vallate papillae

Answer 27

glossopharyngeal

Question 28

sensation of the gingiva of the hard palate is carried to the brain through what

Answer 28

nerves in the greater palatine canals

Question 29

what muscles make up the soft palate

Answer 29

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