ANATOMY FINAL EXAM - SKULL / FACIAL Flashcards
List the facial bones
maxillary, mandible (1), lacrimal, vomer (1), inferior nasal conchae, zygomatic, palatine, nasal
Where’s your naison
nasal bone
When doing lateral – include what for nasal bone?
Anterior nasal spine
Space between nose and mouth
Acanthion (soft tissue)
Smallest facial bone
lacrimal
What facial bone articulates with every other facial bone except mandible
Maxillary (also articulates with frontal and ethmoid skull bones)
Palatine process of the maxillary forms _____ of the hard palate
3/4
What does the hard palate separate?
the nasal cavity from the oral cavity
What doe the hyoid bone suspend from?
the styloid processes of the temporal bones
What does the hyoid bone articulate with?
no other bone
Purpose of hyoid?
supports the tongue
Hyoid bone is located between what?
mandible and larynx
Thickest bone in the skull?
petrous ridges
List the sinuses
frontal, ethmoid, sphenoid, and maxillary
Paranasal sinus purposes:
Chamber for voice, decreases skull weight, warms/moistens inhaled air, act as shock absorbers
What sinus varies in size / shape?
frontal
Most posterior sinus?
sphenoid
How far up when imaging frontal sinuses?
Hairline (coronal suture)
How posterior on a lateral image of the sphenoid sinus?
to the EAM
Largest paranasal sinus?
Maxillary
How far lateral and inferior for imaging maxillary sinuses?
Lateral edges of the orbits, and inferior - top of teeth
What colour should maxillary sinuses be in image? and what does it mean if they aren’t this colour?
black - if they’re not, likely means fluid / infection
Landmark: c1
mastoid tip
nasal bone articulations
other nasal bone, maxillary, frontal bone, perpendicular plate of ethmoid
Maxillae processes
Frontal process, zygomatic process, alveolar process, and palatine process “of maxilla”
What happens if the palatine process isnt fused together?
surgery (important for sucking)
What forms the other 1/4 of the hard palate?
palatine bone
Foramen located in the palatine process?
incisive foramen
What facial bone forms the cheek?
the zygomatic bone
What does the zygomatic facial bone articulate with?
Frontal, temporal, sphenoid, and maxillary
What forms the zygomatic arch
The temporal process of the zygomatic bone and the zygomatic process of the temporal bone
Location of the: orbital fissure
Between greater wing of sphenoid and the maxillae
What bone is superior to the orbital fissure?
lesser wing of the sphenoid
What is the infraorbital foramen?
Maxillary branch of trigeminal nerve
Where does the vertical part of the palatine bone ascend from?
Between the maxilla and pterygoid process of sphenoid
Nasal conchae purpose?
help filter air before it passes to lungs
What does the vomer bone form?
Forms the inferior portion of the bony nasal septum
What is the largest and only movable skull bone?
mandible
Mandible is made up of:
ramus (vertical), body (horizontal), and angle (gonion)
Landmark: C3
Mandible angle / gonion
What process is located in the ramus of the mandible?
coronoid
What forms the TMJ
The mandibular condyle articulates with mandibular notch of the zygomatic process of the temporal bone to form Temporomandibular joint (TMJ)
Mandibular notch is located between ________
the mandible condyle and coronoid process
Tip of chin is called _______
mental point
What foramen is located in the mandible?
mental foramen
What is the term for moving the mandibular condyle? (open mouth position)
Excursion
What type of joint is the TMJ?
gliding / hinge
To view the TMJ, how are images acquired?
with mouth open / closed
What forms the circumference of the orbit?
frontal, zygomatic, maxillary
What forms the roof of the orbit?
Frontal bone (orbital plates), lesser wing of sphenoid
What forms the floor of the orbit?
Maxillary, zygomatic, palatine (blow out fractures occur here-bleeding/fluid into maxillary sinus)
Medial wall of orbit consist of?
maxillary, ethmoid, lacrimal - thinnest part
Lateral wall of orbit consist of?
frontal process of zygomatic, greater wing of sphenoid - thickest part
Most superior frontal sinus
frontal
most inferior frontal sinus
maxillary
What sinus does the open mouth method show?
Sphenoid
How gar back to go to get all of mandible on for lateral projection?
mandible
Frontal process of maxilla articulates with:
nasal bone and frontal bone
Zygomartic process articulates with
Zygoma
Inferior nasal conchae location
inferior lateral wall of nasal cavity
Densest part of the temporal bone
Petrous portion (houses inner ear structures cochlea/semi circular canals - for hearing and balance)
Tip of the projection above acanthion
anterior nasal spine
