Oral Cavity

Question 1

What makes up the oral cavity proper?

Answer 1

Space internal to the teeth

Question 2

What are the three layers of the lips and cheeks?

Answer 2

Skin - Muscles/CT - Mucosa

Question 3

What is major distinction between the lips and cheeks?

Answer 3

presence of the oral orifice

Question 4

What is the frenulum?

Answer 4

Midline mucosal fold, fixes the tongue to the floor of the mouth

Question 5

What is the root of the tongue attached to?

Answer 5

Basihyoid bone

Question 6

What creates the valleculae in the caudal portion of the tongue?

Answer 6

midline mucosal fold to the epiglottis

medial glossoepiglottic fold

Question 7

What is the function of the small keratinized filiform papillae on the dorsal surface of the tongue?

Answer 7

Protect it from sharp objects

Question 8

What are the three types of papillae related to taste on the tongue?

Answer 8

Fungiform - Foliate - Vallate

Question 9

What are Vallate papillae?

Answer 9

Largest papillae very caudal portion of the tongue

Question 10

What are the two groups of tongue muscles?

Answer 10

Intrinsic and Extrinsic

Question 11

What do the intrinsic tongue muscles form?

Answer 11

Dorsal and lateral parts of the body

Question 12

What do the intrinsic muscles of the tongue do?

Answer 12

Control the shape and fine movements of the tongue

Question 13

What are the intrinsic tongue muscles innervated by?

Answer 13

CN XII - Hypoglossal n.

Question 14

Where do the extrinsic muscles of the tongue located?

Answer 14

Originate on other structures and insert on the tongue

Question 15

What are the MOST of the extrinsic tongue muscles innervated by?

Answer 15

CN XII - Hypoglossal n.

Question 16

What extrinsic tongue muscle is NOT innervated by the CN XII?

Answer 16

Palatoglossus

Question 17

What is the origin of the genioglossus?

Answer 17

Medial surface of the mandible

Question 18

Where does the genioglossus insert?

Answer 18

Midline ventral surface of the tongue

Question 19

What does the genioglossus do?

Answer 19

Depress the tongue

Question 20

What is the origin of the hyoglossus?

Answer 20

Basihyoid

Question 21

Where does the hyoglossus insert?

Answer 21

Lateral side of the caudal portion of the tongue

Question 22

What does the hyoglossus do?

Answer 22

Retract the tongue

Question 23

Where does the styloglossus originate?

Answer 23

Stylohyoid

Question 24

Where does the styloglossus insert?

Answer 24

Lateral surface of the tongue along most of the length

Question 25

What does the styloglossus do?

Answer 25

Retract the tongue

Question 26

Where does the geniohyoid muscle originate?

Answer 26

Intermandibular articulation

Question 27

Where does the geniohyoid insert?

Answer 27

Basihyoid

Question 28

What does the geniohyoid do?

Answer 28

Draws hyoid apparatus and larynx rostrally

Question 29

What does the lingual artery comes from?

Answer 29

External carotid

Question 30

When does the lingual artery come off the external carotid?

Answer 30

Where the hypoglossal nerve CN XII

Question 31

Where does the lingual artery enter the oral cavity?

Answer 31

Medial surface of the hyoglossus muscle

Question 32

What is the lingual artery run in relation to on the tongue?

Answer 32

Lateral surface Genioglossus muscle

Question 33

What happens to the lingual artery as it reaches the apex of the tongue?

Answer 33

Deep lingual artery and vessels

Question 34

What special function do the vessels have at the apex of the tongue?

Answer 34

Arteriovenous anastomoses - to facilitate heat exchange and cool animal during panting j

Question 35

What does the hypoglossal n run with?

Answer 35

Lingual artery after crossing through cranial neck

Question 36

Where does the hypoglossal n. enter the oral cavity?

Answer 36

Lateral surface of the hyoglossus muscle

Question 37

What are the four cranial nerves that give sensory to the tongue?

Answer 37

CN V3 - Lingual N. CN VII - Facial N. CN IX - Glossopharyngeal n. CN X - Vagus n.

Question 38

What provides general sensory to the rostral portion of the tongue?

Answer 38

Lingual nerve

Question 39

What provides taste to the rostral portion of the tongue?

Answer 39

Facial n.

Question 40

How does the facial n. get to the rostral portion of the tongue?

Answer 40

Via chorda tympani hitchhiking on the lingual n.

Question 41

What landmark shows you that you are in the rostral portion of the tongue?

Answer 41

Rostral to the vallate papillae

Question 42

What does the Glossopharyngeal n. do in regards to the tongue?

Answer 42

Provides both sensory and taste to most of the caudal tongue

Question 43

What does the vagal n. do in regards to the tongue?

Answer 43

Both general sensory and some taste of the tongue around the epiglottis

Question 44

What are the four salivary glands?

Answer 44

Parotid - Mandibular - Sublingual - Buccal

Question 45

Where is the duct of the parotid gland?

Answer 45

Runs superficially across the masseter

Question 46

where does the parotid gland drain in the mouth?

Answer 46

Opposite of the fourth maxillary premolar

Question 47

Where is the mandibular salivary gland?

Answer 47

Sandwiched between maxillary and linguofacial vein

Question 48

What is the path of the duct of the mandibular salivary galnd?

Answer 48

Medial surface of the gland through the floor of the oral cavity to empty into the rostral part of the oral cavity

Question 49

What are the two sublingual glands?

Answer 49

Monostomatic gland -- and -- Polystomatic gland

Question 50

Where are the sublingual caruncle?

Answer 50

Small bump of tissue just lateral to the root of the lingual frenulum

Question 51

What makes up the vestibule in the mouth?

Answer 51

Space between the lips/cheeks and the teeth