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S&F: Exam 2 > Oral Cavity > Flashcards

Flashcards in Oral Cavity Deck (16):
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Sulcus Terminalis

V- shaped groove dividing tongue into anterior 2/3 (Somatic sensory) and posterior 1/3 (visceral sensory)

1

Foramen Caecum

Pit in middle of Sulcus Terminalis

*Site of the invagination of the thyroid gland

2

Lingual Frenulum

Medial fold on the floor of the tongue and mouth

*Swelling @ bottom = Sublingual papilla

3

Fimbriated Folds

Folds lateral to the lingual frenulum that contain the lingual veins

4

Lymphatics of Tongue

Tip of tongue => Submental nodes

Anterior 2/3 => Submandibular and Deep cervical nodes

Posterior 1/3 => Deep cervical

*Lymphatics cross midl-line of tongue => possible spread of infxn

5

Lingual Nerve

Courses medial to the mouth and enters the floor of the mandible

=>courses on hyoglossus muscle and terminates on the dorsum of the tongue

*Provides touch, pain to anterior 2/3 of tongue*

6

Glossopharyngeal Nerve

Passes thru jugular foramen and in b/w gap of superior and inferior pharyngeal constrictor muscles

-Passes deep to palatine tonsils and enters posterior tongue

*Visceral sensation, taste to posterior 1/3 of tongue

7

Hypoglossal Nerve

Out of hypoglossal canal and b/w internal jugular and carotid arteries

*courses on hyoglossus muscle where it eventually enters the tongue

*Just inferior to the Lingual nerve

8

Tonsillectomy complications

*Bleeding of the tonsillar branches of the palatine artery & possible damage of IX

9

Glandular Arteries

Branches of the facial artery that supply the submandibular and sublingual glands

10

Submental Artery

Branch of the facial artery that supplies the chin

11

Structures b/w Superior Constrictor and Skull (1)

Auditory Canal

Levator palati superioris

12

Structures b/w Superior Constrictor and Middle Constrictor (2)

Stylopharyngeus

Glossopharyngeal Nerve

*Course along w/ each other*

13

Structures b/w Middle Constrictor and Inferior Constrictor

Superior Laryngeal artery

Internal Laryngeal Nerve

14

Dorsal lingual arteries

Suppy the intrinsic and extrinsic muscles of the tongue

15

Facial artery banches

1. Ascending palatine- palate

2. Tonsillar branches - palatine tonsils

3. Glandular- submandibular/sublingual salivary glands

4. Submental