Facial Bones Flashcards Preview

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Flashcards in Facial Bones Deck (15):
1

Amount of Facial Bones

14

2

Name the 14 facial bones

2 nasal, 2 maxillae, 2 zygomatic, 2 lacrimal, 2 palatine, 2 inferior nasal conchae, the vomer, the mandible

3

Nasal bones form ...

the bridge of the nose

4

5 points about the maxillae

unite to form upper jaw bone, form floor of nasal cavity & hard palate which separates oral & nasal cavities, contains maxillary sinus, provides sockets for upper teeth, houses the inferior orbital foramen which transmits nerves & blood vessels

5

2 points about the zygomatic bones

form part of the floor of orbit, commonly known as cheekbones

6

What do the zygomatic bones articulate with

articulate with frontal/maxillae/sphenoid/temporal bones

7

4 points about the lacrimal bones

found posterior & lateral to nasal bones, form medial wall of orbit, contains lacrimal fossa which houses the lacrimal sac - gathers tears to pass into nasal cavity

8

3 points about the palatine bones

form posterior part of hard palate, partial lateral wall of nasal cavity, small part of orbital floor

9

3 points about the inferior nasal conchae

scroll shaped, forms part of lateral wall of nasal cavity, found below ethmoid bone

10

3 points about the vomer

triangular shaped, articulates with perpendicular plate (superiorly) and with the maxillae and palatine bones (inferiorly)

11

3 points about the mandible

largest and strongest, moveable facial bone, curved horizontal body and 2 perpendicular rami (ramus)

12

3 points about the body and rami of the mandible

where body and rami meet = angle of mandible, each ramus has an articular process = mandibular condyle, these articulate with temporal bone = temper-mandibular joint (TMJ)

13

3 more points about the mandible involving processes and foramen

also has an anterior coronoid process, between the mandibular condyle and coronoid process = mandibular notch, mental foramen = transmits the mental nerve & the mandibular transmits alveolar nerves and vessels

14

4 paranasal sinuses

frontal sinus, ethmoidal sinus, spenoidal sinus, maxillary sinus

15

4 points about the paranasal sinuses

all cavities lined with mucus membranes which drain into nasal cavity, lighten weight of skull & increase surface area of nasal mucosa hence allowing an increase of mucus production, thus helps cleanse and moisten inhaled air, serve as resonating chambers which enhance tone of voice