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NLM2 Anatomy > Mouth and tongue > Flashcards

Flashcards in Mouth and tongue Deck (32):
1

What innervates the intrinsic muscles of the tongue?

Hypoglossal nerve

2

Name the two folds of the oral cavity

Anterior= palatoglossal arch (contains palatoglossal muscle)
Posterior= palatopharyngeal arch (contains palatopharyngeus muscle)

3

What is the opening between oral cavity and oropharynx called?

Isthmus of the fauces

4

What divides the tongue into anterior 2/3 and posterior 1/3?

By the V shaped sulcus terminalis where the circumvallate papillae are found

5

Where is the root of the tongue?

Attached to hyoid bone

6

Name the 3 types of papillae

Filiform (friction, has keratinised tip)
Fungiform (taste buds)
Circumvallate (larger, contain taste buds)

7

Describe the sensory innervation of the tongue

Anterior 2/3 has chorda tympani for taste and lingual for general sensory
Posterior 1/3 has glossopharyngeal for both taste and general sensory
Root is innervated by vagus nerve

8

Describe the motor innervation of the tongue

Hypogloassal nerve innervates intrinsic muscles of tongue
Extrinsic muscles are innervated by vagus& hypoglossal

9

What innervates the palatoglossal muscle?

Vagus nerve

10

What innervates the genioglossal muscle?

Hypoglossal nerve

11

What innervates the hyoglossal muscle?

Hypoglossal nerve

12

What innervates the styloglossal muscle?

Hypoglossal nerve

13

What innervates the mylohyoid muscle?

Branch of the mandibular nerve

14

What innervates the anterior belly of the digastric?

Branch of the mandibular nerve

15

What is the posterior belly of the digastric innervated by?

Facial nerve

16

What innervates the stylohyoid muscle?

Facial nerve

17

What innervates the stylopharyngeus muscle?

Glossopharyngeal nerve

18

Cancer of the tongue may involved which nodes?

Submandibular and possibly submental nodes, possibly upper or lower deep cervical nodes

19

Describe the passage of lymph from central part of anterior tongue

Central vessels drain bilaterally to submandibular nodes or upper deep cervical nodes

20

Describe the passage of lymph from marginal part of anterior tongue

Marginal vessels drain unilaterally to submandibular lymph nodes or directly to upper deep cervical lymph nodes on each side

21

Name the 4 extrinsic muscles of the tongue

Genioglossus, hyoglossus, styloglossus, palatoglossus

22

Attachment and action and innervation of genioglossus

Mandible, hypoglossal, protrusion

23

Attachment and action and innervation of hyoglossus

Hyoid bone, hypoglossal, depression

24

Attachment and action and innervation of styloglossus

Styloid process, hypoglossal, elevation&retraction

25

Attachment and action and innervation of palatoglossus

Palatine aponeurosis, vagus, depression of soft palate and elevation of posterior tongue

26

What is the blood supply and drainage of the tongue?

Lingual artery (also supplies floor of mouth and palatine tonsil), drainage into facial vein or directly into internal jugular vein

27

The mylohyoid and the hyoglossus form a trough that contains what?

Deep part of submandibular gland, hypoglossal and lingual nerves

28

What are teeth 1&2 called?

Incisors

29

What are teeth 3 called?

Canines

30

What are teeth 4&5 called?

Premolars

31

What are teeth 6&8 called?

Molars

32

Which are the wisdom teeth?

The last molars, may not erupt