Oral cavity Flashcards
what is foramen cecum a remnant of?
remnant of thyroglossal duct in thyroid gland development
extrinsic muscles of tongue?
- genioglossus
- hyoglosus
- styloglossus
- palatoglossus
whats the motor innervation of the extrinsic muscles of the tongue?
- genioglussus, styloglossus, hyoglossus by XII
- palatoglossus by X
intrinsic muscles of tongue?
superior longitudinal
inferior longitudinal
transverse
verticalis
motor innervation of tongue?
XII to all exept palatoglossus (X)
sensory innervation of tongue?
- ant 2/3 lingual n. branch of VII ( chords tympani)
- post 1/3 IX
- vagus on epiglottis
taste sensation of tongue?
- ant 2/3 chorda tympani n. branch of VII
- post 1/3 IX
vasculature of tongue?
- Dorsal lingual a. ( post part)
- deep lingual a. ( ant part)
- sublingual a.
alla är branches of lingual a.
venous drainage of tongue?
all veins drain into internal jugular v.
Border and content of lateral lingual grrove?
borders:
- med: hyoglossus
- lat: mylohyoid
- sup: sublingual mucosu membrane
content: - lingual n.
- submandibular duct
- XII
- sublingual gland
borders and content of medial lingual groove?
borders:
- med: genioglossus
-lat: hyoglosus
content:
- lingual a.
- IX
The palate is composed of what two parts?
Hard ( ant 2/3) and soft palate (post 2/3)
muscles of soft palate?
- tensor veli palatini (v3)
- levator veli palatini (x)
- palatoglossus (x)
- palatopharyngeous (x)
- musculous uvula (X)
vasculature of the palate?
- greater palatine a.–>descending palatine a.< maxillary a.
- lesser palatine a.< facial a
innervation of soft palate?
-lesser, greater , nasopalatine n.
