Oral Cavity and Pharynx Picture Cards Flashcards
Name these structures, and also name what goes through #4 and #8.
- Medial and lateral pterygoid plates
- Horizontal plate of palatine bone
- Alveolar bone
- Incisive canal (connection to nasal cavity) - nasopalatine nerve (V2) comes through to supply sensation to the anterior hard palate
- Intermaxillary suture
- Palatine process (of maxilla)
- Interpalatine suture
- Greater and lesser palatine foramina - Greater and lesser palatine nerves (V2) come through along with piggybacking parasympathetic vidian nerve (from greater petrosal VII) to innervate the palatine glands
- Hamulus
What are these called and what attaches to them?
Genial spines. The Genioglossus muscle originates on the upper spine and the geniohyoid originates on the lower one.
What happened?
Mandibular tori - bone growth
- Soft palate
- Uvula
- Palatine tonsils
- Oropharynx
Name the arteries and what they arose from
- Tonsillar artery - from facial artery
- Dorsal lingual artery - from facial artery
- Descending palatine artery - from maxillary artery
- Ascending pharyngeal artery - from ECA
- Asecnding palatine artery - from facial artery
What did Dr. Marchant say is cool about #3?
- Incisive papilla
- Palatine raphe
- Transverse palatine folds - they are like fingerprints
Name the muscles and their innervation.
- Uvula - CN X
- Tensor veli palatini - V3
- Levator veli palatini - CN X
- Palatopharyngeus - CN X
- Palatoglossus - CN X
Also, what are the actions and innervations of 4 and 5?
- Pterygoid hamulus
- Scaphoid fossae
- Medial and lateral pterygoid plates
- Letator veli palatini - elevates palate CN X
- Tensor veli palatini - flattens palate CN V3
What nerves provide somatic sensory to these regions of the palate?
- Nasopalatine
- Greater palatine
- Lesser palatine
all are branches of V2
Name the nerves that supply sensation to these vestibular regions.
- V2 - posterior superior alveolar nerve
- V2 - middle superior alveolar nerve
- V2 - anterior superior alveolar nerve
- V3 - long buccal nerve
- V3 - mental nerve
Name the muscles, innervation, and action.
- Genial tubercles
CN XII:
- Styloglossus - retracts, cups the tongue
- Hyoglossus - depresses the tongue
- Genioglossus - protrudes tongue, depresses the central portion
C1 via hypoglossal:
- Geniohyoid - elevates hyoid bone
- Mylohyoid m.
- Hypoglossus m.
- Hypoglossal nerve (CN XII)
- Occipital artery
- Foliate
- Fungiform
- Vallate
- Foramen cecum
- Terminal sulcus
How can you clinically test for CN XII damage?
Have the patient stick their tongue out. This involves contraction of the genioglossus muscle. Damage to CN XII unilaterally will result in deviation to the side that is damaged. That side of the tongue will be atrophied also.
Does the glossopharyngeal supply taste sensation over a slightly larger area than it does somatic sensory? Explain.
Yeah, its somatic sensation ends at the sulcus terminalis, but the taste innervation extends anteriorly to the anterior line of the vallate. Check it…