facial bones

Which part of the orbit is involved in a blow out fracture?

Floor- orbital contents often pushed into maxillary sinus

Which facial bones forms the lower, medial part of the orbit?

Maxilla, lacrimal, (ethmoid- more on medial wall. Sphenoid- more deep posterior wall)

What bones form the hard palate?

Palatine process of maxilla (3/4 of hard palate) and palatine bones (last posterior ¼)/ be clear there are two of them.

Which bone forms the superior bony septum?

Perpendicular plate of ethmoid

Which bone forms the inferior bony septum?

Vomer be clear this one is unpaired. It projects superiorly to articulate with perpendicular plate of ethmoid

A quadripod fracture involves the disassociation of which bone?

Zygoma has 4 attachment sites- 2 to cranium and 2 to maxilla. The fractures occur at superior orbital rim at frontal bone (zygomaticofrontal suture), and the lateral orbital wall at the sphenoid (zygomaticoshenoid suture). Inferior orbital wall at the maxilla (xygmaticomaxillary suture). Zygomatic arch fracture at the temporal bone (zygomaticotemporal suture).

A tripod fracture involves the disassociation of which bone?

Zygoma- tripod- three, zygoma separates from three bones- maxilla, frontal and sphenoid bones

Which of those processes is most anterior?

coronoid process

What is another name for the zygoma?

malar bone

Which facial bone is L shaped?

palatine

Which bones does the zygoma articulate with?

-Frontal process (frontal bone) -Maxillary process (maxilla) -Temporal process (temporal) -Sphenoid

What are the articular surfaces of the maxilla?

-Frontal process- frontal bone -Alveolar process- teeth -Zygomatic process- zygoma -Palatine process- palatine -Also articulates with lacrimal bone and ethmoid but no specifically named processes

The mandibular notch sits between which processes?

Coronoid process and condyloid process of mandible