Oral Cavity Flashcards
the U-shaped mandible bones for the teeth are called?
alveolar arches
hard palate is made of two things:
- palatine process of maxilla
2. horizontal process of palatine bone
what muscle is the floor of the mouth?
mylohyoid muscle
Tongue posteriorly contains what tonsils?
lungual tonsils
what demarcates the posterior/anterior tongue?
sulcus terminalis
2 arches that surround the palantine tonsil?
Ant: palatoglossal arch
Post: Palatopharyngeal arch
3 kinds of papillae on the tongue are?
Valate: ant. sulcus terminalis
foliate: post-latero tongue
Fungiform: surface of tongue
what is the midline meeting point of sulcis terminalis called?
foramen caecum
styloglossus does what?
retracts tongue
genioglossus does?
protrude tongue
hyoglossus does?
depress tongue
palatoglossus does?
elevate tongue
what depresses the tongue?
hyoglossus
what retracts the tongue?
styloglossus
what elevates tongue?
palatoglossus
what protrudes tongue?
genioglossus
what innervates tongue muscles?
hypoglossal except palatoglossus: pharyngeal branch of Vagus
3 intrinsic muscles of tongue:
- superior long.
- inferior longi.
- transverse and vertical
intrinsic muscles innervated by?
hypoglossal
palatoglossus muscle innervated by?
Vagus
anterior 2/3 of tongue innervation?
- Lingual (general) V3 Trigeminal
2. chorda tympani VII Facial
what innervates posterior 1/3 of tongue general vs. sensory
both glossopharengeal
how many teeth in adult if none removed?
16 upper
16 lower
how many premolars do we have?
8 total
4upper and 4 lower
What nerve supplies upper teeth?
maxillary nerve V2 Trigeminal
what nerve supplies lower teeth?
mandibular nerve V3 trigeminal
inferior tooth pain may refer pain where?
external auditory meatus via the post. auricular nerve
superior tooth pain may refer pain where?
maxillary sinus
name the 3 salivary glands:
- parotid
- submandibular
- sublingual
where does the duct of submandibular gland emerge?
lateral sides of lingual frenulum
what is the soft palate made up of?
musculus uvulae
palatine aponeurosis attaches it to the hard palate
soft palate function?
- seals nasal cavity during swallowing, coughing, suction
2. allow unimpeded breathing during chewing
what two muscles elevate the soft palate?
- tensor veli palatini
2. Levator Veli Palatini
3 muslces depress soft palate?
- musculus uvulae
- palatoglossus
- palatopharyngeus
what are the soft palate muscles innervated by?
Vagus
except tensor veli palatini (CN V)
What is Waldeyer’s ring?
incomplete ring of lymphoid tissue
- pharyngeal
- Tubal
- palatine
- lingual
