unit 5 facial bones (anatomy)

maxillary bone

what is the largest immovable bones of the face

maxillary bone

what forms part of mouth, nasal cavity, & orbit

The body of the maxillary bone

what part of the maxillary bone contains maxillary sinuses & 4 processes

irregular

All facial bones are classified as ______________ (what type of bone)

2 maxillae

2 palatine

2 zygomatic

2 lacrimal

2 nasal bones

2 Inferior nasal conchae

Vomer

Mandible

list the 14 facial bones

14

how many facial bones

Anterior nasal spine

sharp projection where the maxillae join at midline (bottom anchor for nose)

frontal

zygomatic

alveolar

palatine

list the 4 processes on the maxillary body

Cleft palate

congenital birth defect caused by incomplete joining

frontal process

extends upward; articulates with nasal bones

Zygomatic process

extends laterally toward zygoma

Alveolar process (maxilla)

inferior part of body; supports upper teeth

palatine process

anterior portion of the hard palate (roof of mouth); 2 ___________ united at midline (synarthrodial joint)

palatine bones

L-shaped bones that form the posterior part of the hard palate (roof of mouth)

palatine processes, hard palate

palatine bones articulate with ______________________ of the maxillae to form the entire ______________

zygomatic bones

Bones that form the prominence of the cheeks & make up the lower outer portion of the orbits

zygomatic arch

zygomatic prominence

name the 2 zygomatic bones

Zygomatic arch

slender process of bone that extends posteriorly to join with zygomatic process of temporal bone

Zygomatic prominence

most prominent part of zygoma used as a positioning landmark

Lacrimal

what is the smallest facial bones that lie just posterior to the frontal process of the maxillae

lacrimal

what bone forms part of the anterior medial wall of the orbits

Nasal

what fused bones that lie just anterior & medial to the frontal process of the maxillae

Nasal

what bone forms the bridge of the nose

Inferior Nasal Conchae

Long & thin scroll-shaped bones that divide the nasal cavities into various compartments along with the superior & middle nasal conchae that are part of the ethmoid bone

inhaled air

Inferior, middle & superior nasal conchae mix the flow of ______________

inferior, middle, superior nasal conchae

Serve to warm & clean the air before it reaches the mucous membranes & lungs

Vomer

Thin, triangular bone situated in the midsagittal plane of the floor of the nasal cavity

•Perpendicular plate of ethmoid - superior portion

•Vomer - inferoposterior portion

•Septal cartilage - anterior portion

the nasal septum divides the nasal cavity into two halves. The nasal septum is made up of

septal cartilage

what is the anterior portion of the nasal septum

vomer

what is the infero-posterior portion of the nasal septum

Perpendiular Plate of ethmoid

what is the superior portion of the nasal septum

mandible

largest facial bone & only one that is moveable

body

ramus (2)

2 main parts separated by the gonion (angle

body

curved horizontal portion of mandible (u-shaped)

ramus

vertical portions of mandible

alveolar process

symphysis menti

mental protuberance

mental foramina

what makes up the body of the mandible

Mental foramina

passageway for nerves & blood vessels (lower lip & chin)

Mental protuberance

flat, triangular area below symphysis menti with knoblike projections; center is called "mental point"

Symphysis menti

union of each lateral half at anterior midline (mandible)

Alveolar process (mandible)

superior part of body; supports lower teeth

Mandibular notch

U-shaped part of mandibular rami

Coronoid process

at anterior end of mandibular notch

Condyloid process

at posterior end of mandibular notch

TMJ

Condyle (head) articulates with temporal bone to form the _________

neck

inferior to condyle on mandibular rami

mandibular notch

coronoid process

condyloid process

condyle head

neck

list all parts of the mandibular rami

Temporomandibular joint (TMJ)

condyle of mandible & temporomandibular fossa of temporal bone (name the joint)

Diarthrodial with a bicondylar movement type

joint classification and movement for TMJ

gomphosis

Maxilla/mandible & teeth are structurally a ______________ type of fibrous joint

7

how many bones in the orbits

- Frontal

- Ethmoid

- Sphenoid

list the 3 cranial orbit bones

> lacrimal

> palatine

> zygoma

> maxilla

list the 4 facial orbit bones

frontal

orbital plate - most of roof (what bone in orbit)

ethmoid

sphenoid

what are the posterior socket bones of the orbit

lacrimal

part of medial wall of the orbit

palatine

small part of floor of the orbit

zygoma

most of lateral wall of orbit

maxilla

large part of floor of orbit

Optic foramen (sphenoid bone)

passageway for optic nerve from retina to brain

Superior orbital fissure (between lesser & greater wings of sphenoid bone

passageway for 4 cranial nerves that serve eye

Inferior orbital fissure - (between maxilla, zygoma & greater wing of sphenoid)

passageway for maxillary branch of cranial nerves that serve cheek, nose, upper lip & teeth

Sphenoid strut

small space which is a portion of the lateral wall of the optic canal

Lighten the skull

Provide resonance for the voice

Produce mucus to moisten inhaled air

the sinuses of the skull serve to

maxillary (2)

frontal (2)

ethmoid (many)

sphenoid (1 or 2)

4 groups of air-filled cavities that communicate with each other & the nasal cavity (list them)

maxillary sinus

within bodies of maxillae (what sinus)

frontal sinus

within inner & outer tables of frontal bone (what sinus)

ethmoid sinus

within lateral labyrinths of ethmoid (what sinus)

sphenoid sinus

within body of sphenoid below sella turcica (what sinus)

2

how many maxillary sinuses

2

how many frontal sinuses

many (the exact word on powerpoint)

how many ethmoid sinuses

1 or 2

how many sphenoid sinuses

sphenoid bone

what bone is the optic foramen found on

between lesser & greater wings of sphenoid bone

between what two part of bones is the superior orbital fissure found on

between maxilla, zygoma & greater wing of sphenoid

what bones is between the inferior orbital fissure