Unit 3 Flashcards
Three landmarks of anterior maxilla
Canine eminence, infra-orbital foramen, anterior nasal spines=right at bottom of septum
Alveolar canals
Carry posterior-superior blood vessels and nerves
Is located in the alveolar process
Posterior maxilla
Maxillary tuberosity
Articulates with the palatine bone
Is an elevation or protuberance, back around where wisdom tooth is
Posterior maxilla
Two landmarks of posterior surface
Alveolar canals and maxillary tuberosity
Two landmarks of superior surface of maxilla
Infra orbital groove, which carries infraorbital blood vessels and nerves (below orbit)
The surface is triangular in shape and forms the floor of the orbital cavity
Landmarks of the nasal (medial) surface (there are seven)
- Nasal crest-above nasal spine
- anterior nasal spines
- palatine process
- premaxilla-incisive bone
- premaxillary suture
- intermaxillary suture-where two halves of maxilla come together
- transverse maxillapalatine suture- runs horizontal across back of mouth
Alveolar process
Thick spongy part of maxilla that houses the teeth (divided into 8 cavities, which contain teeth)
Most important for speech sound production (t and d sounds)
Nine bones maxillae articulate with
Frontal, ethmoid, nasal, lacrimal, zygomatic, palatine, vomer, inferior nasal concha, fellow maxillae
The nasal bones
Two oblong plates that form the bridge of the nose
Other name for zygomatic bone
Malar (l. Malar, cheek) bone
Four processes of zygomatic bone
Frontosphenoidal
Orbital
Maxillary
Temporal
What forms zygomatic arch?
Zygomatic bone and zygomatic processes of the maxilla and temporal bones
Lacrimal bones
Smallest facial bones, form part of the medial wall of the orbital cavity
Four bones each lacrimal articulates with
Frontal, ethmoid, maxilla, inferior nasal concha
Inferior nasal concha
Also called turbanate, scroll shaped bone, warms air coming into nose and humidify the air coming into nose
Vomer
Makes up the inferior half of the bony septum
Role of velum
Vary degree of acoustic coupling between the oral and nasal cavities,
Only open for m,n,ing-complete coupling, nasal sounds. More closed for all other sounds (though not necessarily completely)
Coarticulation= open to close takes time and makes it hard to pronounce things correctly
Four surfaces of maxilla
Anterior, posterior (infra temporal), superior (orbital), medial (nasal)
3 tissue layers of pharyngeal tube
Fibrous top coat called pharyngeal aponeurosis
Mucous middle coat
Relatively strong muscular layer bottom coat