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A & P: 2 > Facial Bones > Flashcards

Facial Bones Flashcards

1
Q

Define the maxillary bones

A

Largest, immovable bone of the face
Both maxillary bones unite @midline and acanthion

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2
Q

What are the parts of the maxillary bones

A

Frontal process
Zygomatic process
Alveolar process
Palatine process
Infraorbital foramen

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3
Q

Define the frontal process

A

Extends upwards to attach to frontal bone

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4
Q

Define the zygomatic process

A

Where the maxillary attaches to the zygoma

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5
Q

Define the alveolar process

A

Houses the teeth

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6
Q

Define anterior nasal spine

A

Small pointed projection where the nose joins the acanthion

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7
Q

Define the infraorbital foramen

A

Inferior to infraorbital margin

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8
Q

Define the palatine process

A

Anterior 1/3 of the roof of the mouth
Aka hard palate

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9
Q

Define palatine bones

A

Horizontal portion forms the posterior 1/3 of roof of mouth

Vertical portion extends upward to the bony orbit

Against pterygoid projections

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10
Q

Define the zygoma

A

Cheek bones that attaches to the maxilla

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11
Q

What are the parts of the zygoma

A

The body ( in the center)

Frontal process makes lateral orbital margin

Zygomatic prominence

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12
Q

What makes the zygomatic arch

A

The zygoma and the zygomatic process of the temporal bone

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13
Q

Define nasal bones

A

Attaches to frontal bone and frontal process of maxillary bone

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14
Q

Define lacrimal bones

A

Part of the medial wall of the orbital cavity

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15
Q

Define the inferior nasal conchae

A

“Scroll” shaped bones that project medially from the lateral walls of the nasal cavity

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16
Q

Define the vomer

A

Inferior 1/2 of the bony nasal septum
Attaches to the perpendicular plate of ethmoid

17
Q

Define the mandible

A

The mental “mouth” region

18
Q

What are the 3 sections of the mandible

A

Mental region

Body

Ramus

19
Q

What are the parts of the mental region

A

Mental protuberance
Mental point
Symphysis menti
Mental foramina
Alveolar process

20
Q

What are the parts of the body

A

The gonion/angle
Alveolar process ( houses lower teeth)

21
Q

What are the parts of the ramus

A

Gonion / angle
Condyle/ head
Neck
Mandibular notch
Coronoid process

22
Q

What kind of joint is the TMJ (temporomandibular joint)

A

Hinge ( open and close mouth)

Gliding ( anterior movements)

23
Q

Where is the Apex of the bony orbit located

A

Posterior end of the the orbit

24
Q

Where is the base located on the bony orbit

A

The anterior end of the orbit ( orbital rim)

25
Q

Where does the orbital apex lie

A

37 degrees towards the MSP

30 degrees superior

26
Q

How many bone make up the bony orbit

A

7

27
Q

What bones make up the outer orbit

A

Frontal bone ( Supra orbital margin)
Maxilla ( infraorbital margin)
Zygoma ( lateral orbital margin)

28
Q

What bones make up the inner orbit

A

Lacrimal ( medial orbital wall posterior to frontal )

Ethmoid ( medial orbit wall posterior to lacrimal)

Sphenoid ( greater wing lateral wall posterior to zygoma & lesser wing just inferior to frontal creates optic foramen)

Palatine bone ( most posterior)

29
Q

How many obit openings are there?

A

3

30
Q

Describe the optic foramen

A

Round opening in the lesser wings of the sphenoid for optic nerve

31
Q

Describe the superior orbital fissure

A

Slit like opening just inferior to optic foramen

Separates lesser and greater wings

32
Q

Describe the inferior orbital fissure

A

Slit like opening anterior to superior orbital fissure

Between the greater wings of sphenoid and maxilla

33
Q

What is a blowout fracture

A

Results from a direct blow to the eye

Maxillary sinus fills with fat and blood from the orbit

34
Q

What is a tri-pod fracture

A

Results from direct impact to cheek

The zygoma separates from the frontal , temporal , and maxilla

35
Q

What is a cleft palate

A

Incomplete union of the maxillary bone at the roof of the mouth

Results from failure of the upper lip to form

A & P: 2 (17 decks)

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