Tongue and oral cavity

Question 1

What forms the roof of the oral cavity?

Answer 1

Hard and soft palates

Question 2

What forms the floor of the oral cavity?

Answer 2

Mylohyoid mainly, hyoglosss, genioglossus, geniohyoid

Question 3

What forms the lateral boundaries of the oral cavity?

Answer 3

Lips and cheeks

Question 4

2 arches can be seen at the back of the oral cavity. 1 is larger and projects further into the midline, which is this?

Answer 4

Palatopharyngeal arch is larger

Palatoglossal arch is smaller

Question 5

What is the sulcus terminals?

Answer 5

The boundary between the anterior 2/3 and posterior 1/3 of the tongue

Question 6

What is the small fold of mucous membrane running from he floor of the mouth up the underside of the tongue

Answer 6

Frenulum

Question 7

What vessel is very superficial on the underside fo the tongue?

Answer 7

Lingual vein

Question 8

What artery and nerve can been seen on the underside fo the tongue?

Answer 8

Lingual artery and nerve

Question 9

What innervates the anterior 2/3 of the tongue?

Answer 9

General sense = lingual nerve
Special sense (taste) = chorda tympani (VII)

Question 10

What innervates the posterior 1/3 of the tongue?

Answer 10

Glossopharyngeal

Question 11

What papillae line the sulcus terminals?

a) Circumvallate papillae
b) Filiform papillae
c) Fungiform papillae
d) Foliate papillae

Answer 11

a

Question 12

What papillae are not he dorsal surface of the anterior 2/3 of the tongue?

a) Circumvallate papillae
b) Filiform papillae
c) Fungiform papillae
d) Foliate papillae

Answer 12

b

Question 13

What papillae are the most anterior?

a) Circumvallate papillae
b) Filiform papillae
c) Fungiform papillae
d) Foliate papillae

Answer 13

c

Question 14

What papillae are found in 2 clusters no the side of the tongue?

a) Circumvallate papillae
b) Filiform papillae
c) Fungiform papillae
d) Foliate papillae

Answer 14

d

Question 15

What are papillae?

Answer 15

Projections of the tongue containing taste buds. Increase tongue SA so can taste and feel more accurately

Question 16

What are the extrinsic muscles of tongue?

Answer 16

Styloglossus, hyoglossus, genioglossus, palatoglossus

Question 17

What innervates the extrinsic muscles of the tongue?

Answer 17

Hypoglossal nerve (XII)
except for palatoglossus which is innervated by pharyngeal plexus via X

Question 18

What is the function of hyoglossus?

Answer 18

Pulls sides of tongue down

Question 19

What is the function of styloglossus?

Answer 19

Pulls side of tongue up and back

Question 20

What is the function of genioglossus?

Answer 20

Pulls anterior tip forward

Question 21

What is the function of palatoglossus?

Answer 21

Lifts the tongue

Question 22

What are the intrinsic muscles of the tongue?

Answer 22

Superior longitudinal, inferior longitudinal, vertical, transverse

Question 23

What is the function of superior and inferior longitudinal?

Answer 23

Shorten the tongue

Question 24

What is the function of the vertical muscle?

Answer 24

Flatten the tongue

Question 25

What is the function of the transverse muscle?

Answer 25

Narrow the tongue

Question 26

What innervates the intrinsic muscles of?

Answer 26

XII

Question 27

What is the relationship of the lingual nerve to the submandibular duct?

Answer 27

Wraps around

Question 28

What nerve joins the lingual nerve?

Answer 28

Chorda tympani

Question 29

Where is the lingual nerve in relation to mylohyoid and hyoglossus?

Answer 29

Deep to mylohyoid, superficial to hyoglossus

Question 30

What does lingual nerve provide parasympathetic innervation to?

Answer 30

Submandibular ganglion

Question 31

Where does the lingual nerve go?

Answer 31

To the tongue to provide general sensory innervation to the anterior 2/3

Question 32

What artery wraps around XII?

Answer 32

Lingual artery

Question 33

Where do the branches fo XII head?

Answer 33

Muscles of the tongue

Question 34

What muscle is XII deep to?

Answer 34

Posterior digastric

Question 35

What nerves innervate the tooth substance of the mandibular teeth?

Answer 35

Inferior alveolar nerve = posterior 5 | Mental = anterior 3

Question 36

What nerves innervate the mandibular gingiva?

Answer 36

Long buccal nerve = posterior buccal Mental = anterior buccal Lingual nerve = lingual gingiva

Question 37

What nerves innervate the tooth substance of the maxillary teeth?

Answer 37

Posterior 3 = posterior superior alveolar nerve Middle 2 = middles superior alveolar nerve Anterior 3 = anterior superior alveolar nerve

Question 38

What nerves innervate the maxillary gingiva?

Answer 38

Posterior superior alveolar nerve = posterior buccal Infraorbital nerve = anterior buccal Greater palatine = posterior lingual Nasopalatine = anterior lingual