Soft Palate

Question 1

Hard Palate is covered in

Answer 1

• Covered in keratinized mucosa
  
  • Incisive papilla
  • Palatal raphe
  • Palatal rugae
• Palatal glands
  
  • Beneath mucosa

Question 2

Soft Palate

Valve

Uvula

Answer 2

• Valve
  
  • Swings up to block nasopharynx from oropharynx while swallowing
  • Swings down to block oropharynx from oral cavity
• Uvula
  
  • Muscular depression
  • Damage to CN 10 causes deviation to un-injured side

Question 3

Soft Palate Margins

Anteriorly

Posteriorlaterally

Posteriorly

Answer 3

• Anterior
  
  • Continous with anterior 2/3 of palate
• Posteriorlaterally
  
  • Forms superior posrtion of palatoglossal and palatopharyngeal folds
• Posterior
  
  • Uvula hangs in space

Question 4

Soft Palate composed of

Answer 4

• Non-keratinized mucosa
• Anterior zone contains fat
• Posterior zone contains mucous glands

Question 5

Arterial Supply to Soft palate

3 branches

Answer 5

• 3rd part of Maxillary a., from ECA–> Pterygopalatine a.
• Greater palatine a.
  
  • Via greater palatine formaen
• Lesser palatine a.
  
  • Via lesser palatine formen
• Sphenopalatine a.
  
  • Via incisive canal
  • Anastomose with greater palatine a.

Question 6

Innervation of soft palate

Sensory and Motor

Answer 6

• Sensory
  
  • CN V2
    
    • Nasopalatine n.
      
      • Via incisive formaen
    • Greater palatine n.
    • Lesser palatine n.
• Motor
  
  • CN X, pharyngeal plexus
  • Except tensor veli palitini-V3

Question 7

5 muscles of Palate and its innervation

Answer 7

• CNV3
  
  • Tensor veli palitini
• CN X, pharyngeal plexus
  
  • Levator veli palitini
  • Palatopharyngeus
  • Palatoglossus
  • Musculus uvulae
• Palatine aponeurosis
  
  • Fibrous CT of soft palate
  • Muscles beneath

Question 8

Tensor Veli Palitini

O

I

A

N

Answer 8

• O: Auditory tube, scaphoid fossa of sphenoid
• I: Palatine aponeurosis
• A: tenses soft palate, pulls laterally, opens auditory tube
• N: Medial pterygoid n. (branch of V3)

Question 9

Levator Veli palitini

O

I

A

N

Answer 9

• O: Auditory tube, petrous of temporal
• I Palatine aponeurosis
• A: Elevates soft palate, pulls palate posteriorly (close nasopharynx)
• V: CN X, Pharyngeal plexus
• Passes through aperture superior to superior constrictor

Question 10

Musculus uvulae

O
I
A
N

Answer 10

• O: Posterior nasal spine, palatine aponeurosis
• I: Muscle of the opposite side
• A: Elevates uvula (close nasopharynx), pulls uvula laterally
• N: CNX

Question 11

Palatoglossus

O
I
A
N

Answer 11

• O: Anterior surface of soft palate, palatine aponeurosis
• I: Lateral tongue
• A: Elevates tongue, depresses soft palate, (narrowing oropharyngeal isthmus)
• N: CN X

Question 12

Palatopharyngeus

O
I
A
N

Answer 12

• O: Posterior border of hard palate, palatine aponeurosis
• I: pharynx
• A: Elevate the pharynx, helps close nasopharynx
• N CNX

Question 13

Order of arches

Answer 13

• Anterior to posterior
  
  • Palatoglossal arch fold
  • Palatine tonsil
  • Palatopharyngeal arch/fold

Question 14

Palatoglossal Arch

AKA

Actions

Answer 14

• AKA Glossopalatine arch, Anterior pillar of fauces
• Draws tongue and soft palate closer together while swallowing
• Narrows isthmus of fauces

Question 15

Palatopharyngeus Arch

AKA

Actions

Answer 15

• Pharyngopalatine arch, Posterior pillar of fauces
• Elevates pharynx
• Helps close nasopharynx
• Aids in swallowing

Question 16

Attachment of Soft Palate

Answer 16

• SP atatches to tongue via palatoglossal arches
• SP attaches to pharynx via palatopharyngeal arches