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ANP 1111 > Bones of the Head and Face > Flashcards

Bones of the Head and Face Flashcards

1
Q

The vault forms which aspects of the skull?

A

Superior, lateral, posterior aspects of the skull and forehead

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2
Q

The base forms which aspect of the skull?

A

Inferior aspect of the skull

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3
Q

What are the names of the cranial bones?

A

Frontal, Occipital, Parietal, Sphenoid, Temporal, Ethmoid

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4
Q

What does it mean when cranial bones are paired?

A

There is one on each side of the skull

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5
Q

What is the function of the curvature of cranial bones?

A

Allows them to be self-bracing, and allows them to be quite strong while being quite thin

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6
Q

What is the function of the frontal bone?

A

Forms the roof of the orbits, contributes to the anterior cranial fossa

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7
Q

What does the frontal bone articulate with?

A

Paired parietal bones (posteriorly)

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8
Q

What is the function of the parietal bones?

A

Form the superior and lateral aspects of the skull, therefore form the bulk of the cranial vault

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9
Q

What is the function of the occipital bone?

A

Helps form posterior aspect of the skull, forms walls of the posterior cranial fossa

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10
Q

What does the occipital bone attach to?

A

Parietal bones, temporal bones, sphenoid bone

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11
Q

What is the name of the large hole at the base of the occipital bone?

A

Foramen Magnus (large hole)

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12
Q

Where are the occipital condyles?

A

On either side of the foramen magnum

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13
Q

What is the function of the occipital condyles?

A

Site of articulation with the first cervical vertebra (atlas)

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14
Q

What is the external occipital protuberance?

A

A bony projection at the back of the skull, more prominent in males

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15
Q

What is the function of the temporal bones?

A

Form the inferior and lateral aspects of the skull and parts of the cranial floor

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16
Q

What are the 3 parts of the temporal bones?

A

Squamous part, petrous part, tympanic part

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17
Q

What are some important areas on the petrous part of the temporal bones?

A

Mastoid process, styloid process

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18
Q

What is an important area of the squamous part of the temporal bones?

A

Zygomatic process

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19
Q

What is the mastoid process?

A

An attachment site for some neck muscles

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20
Q

What is the styloid process?

A

An attachment site for muscles of the tongue and some neck muscles

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21
Q

What is the function of the squamous part of the temporal bones?

A

forms zygomatic process to the cheekbone, and the mandibular fossa receives the condyle of the mandible

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22
Q

What is the function of the tympanic part of the temporal bones?

A

Surrounds external acoustic meatus

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23
Q

What is the function of the petrous part of the temporal bone?

A

Contributes to the cranial base, houses middle and inner ear cavities

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24
Q

What are the foramina associated with the temporal bone?

A

Jugular foramen, carotid canal, internal acoustic meatus

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25
Q

The sphenoid bone articulates with:

A

All other cranial bones

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26
Q

The sphenoid bone forms the:

A

Base of the middle cranial fossa, contributes to the base of the anterior cranial fossa

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27
Q

What are the projections of the sphenoid bone?

A

Greater wings, lesser wings, pterygoid process

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28
Q

What is the optic foramina?

A

A passageway for optic nerves

29
Q

What is the superior orbital fissure?

A

Located between the greater and lesser wings of the sphenoid bone, a passageway for cranial nerves for eye movement

30
Q

What is the shape of the ethmoid bone?

A

It approximates a cube

31
Q

Where is the ethmoid bone?

A

Deep between the orbits and nasal cavities

32
Q

what is the function of the cribriform plate?

A

Forms roof of nasal cavity and the floor of the anterior cranial fossa

33
Q

What is a feature of the cribriform plate?

A

It has olfactory foramina

34
Q

What are olfactory foramina?

A

Tiny holes that transmit olfactory nerves

35
Q

What is the function of the perpendicular plate?

A

Projects inferiorly to contribute to the nasal septum

36
Q

What is the function of the crista galli?

A

Projects superiorly to attach to the dura mater of the brain

37
Q

Lateral masses of the ethmoid bone contain:

A

Ethmoid sinuses

38
Q

Medially, the ethmoid bone has:

A

Superior and middle nasal conchae

39
Q

Laterally, the ethmoid bone has:

A

Orbital plates which contribute to the medial wall of the orbits

40
Q

The coronal suture unites the:

A

Frontal bone and 2 parietal bones

41
Q

The squamous suture unites the:

A

Parietal bone and temporal bone

42
Q

The lambdoid suture unites the:

A

Occipital bone and 2 parietal bones

43
Q

The sagittal suture unites the:

A

2 parietal bones

44
Q

What are sutural bones?

A

Tiny irregular bones that occur within a cranial suture. They are additional ossification centers that appeared rapidly during fetal development

45
Q

What are the PAIRED facial bones?

A

Maxillae, zygomatic, nasal, lacrimal, palatine, inferior conchae

46
Q

What are the UNPAIRED facial bones?

A

Mandible and vomer

47
Q

What is the mandible?

A

Lower jawbone, strongest and largest bone of the face

48
Q

What is the body of the mandible?

A

horizontal part of the bone, contains the chin, left and right rami join body at the mandibular angle

49
Q

The majority of the hard palate is formed by the:

A

Maxillary bones

50
Q

The anterior 2/3 of the hard palate is formed by the:

A

Palatine processes projecting posteriorly

51
Q

The zygomatic bones articulate with:

A

The zygomatic process of the maxilla, frontal, and temporal bones

52
Q

The zygomatic bones contribute to the:

A

Inferolateral margins of the orbits

53
Q

What are nasal bones?

A

2 small rectangular bones that fuse medially to form the bridge of the nose

54
Q

The nasal bones articulate superiorly with the:

A

Frontal bone

55
Q

The nasal bones articulate laterally with the:

A

Maxillary bones

56
Q

What are lacrimal bones?

A

2 fingernail shaped bones in the anterior medial portion of the orbit

57
Q

The lacrimal bones articulate with the:

A

Frontal bone, ethmoid bone, maxillae

58
Q

What is a lacrimal fossa?

A

A small depression that holds a lacrimal sac

59
Q

What bones contribute to the orbits?

A

Zygomatic, frontal, maxilla, ethmoid, lacrimal, sphenoid, palatine (orbital process)

60
Q

What are the palatine bones?

A

2 L-shaped bones that form the hard palate, nasal cavity, and orbit

61
Q

The horizontal plate of the palatine bone forms:

A

Part of the hard palate (posterior 1/3)

62
Q

The vertical plate of the palatine bone forms:

A

The nasal cavity and orbit

63
Q

What is the vomer?

A

A single thin bone that forms the nasal septum

64
Q

What are the inferior nasal conchae?

A

Thin, curved bones that project medially

65
Q

FITB: The inferior nasal conchae are the ___ of 3 pairs of conchae

A

Largest

66
Q

Which bones contribute to the paranasal sinus?

A

Frontal, maxillary, sphenoid, ethmoid

67
Q

What is the function of the paranasal sinuses?

A

Lighten the skull, enhance resonance of the voice, warm and humidify incoming air

68
Q

What allows the paranasal sinuses to warm and humidify incoming air?

A

Because they are connected to the nasal cavity

ANP 1111 (7 decks)

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