Ch. 10 Bones of the Skull Flashcards

1
Q

Functions of the skull

A
PCOM!
Protection cavity for the brain
Cavities to house sensory organs
Opening for air and food passage
Mastication
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2
Q

How many bones are in the skull?

A

22, both paired and unpaired. Grouped into cranial and facial bones.

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3
Q

Immovable joints

A

sutures

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4
Q

Which is the only bone joined by a synovial joint?

A

Mandible

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5
Q

The 8 bones that encase and protect the brain.

A

Cranial bones

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6
Q

How many cranial bones are there?

A

8

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7
Q

Superior portion of the cranium is also referred to as ___

A

calvaria

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8
Q

A flat bone at the posterior inferior aspect of the cranium

A

Occipital

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9
Q

Large foramen at the base of the skull near the anterior aspect of the occipital bone through which the spinal cord enters the cranium.

A

Foramen magnum

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10
Q

Structures on the occipital bone

A
External occipital protuberance (occiput)
Superior nuchal line
Inferior nuchal line
Occipital condyles
Basilar part 

NOOB (nuchal, occiput, occipital condyles, basilar part)

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11
Q

Large, prominent eminence on the posterior midline of the occipital bone.

A

External occipital protuberance (occiput)

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12
Q

Curved ridge extending laterally from the occiput

A

Superior nuchal line

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13
Q

Curved ridge that parallels the superior nuchal line and extends laterally from the occiput

A

Inferior nuchal line

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14
Q

Prominent oval projections at the anterolateral aspects of the foramen magnum that articulate with the first cervical vertebrae.

A

Occipital condyles

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15
Q

Part of the occipital bone that lies anterior to the foramen magnum and articulates with the sphenoid bone. Its superior surface is called the Clivus.

A

Basilar part

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16
Q

Superior surface of the basilar part

A

Clivus

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17
Q

Bones forming a large part of the walls of the skull

A

parietal

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18
Q

Bones located at the lateral and superior aspect of the cranium

A

parietal

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19
Q

Bone of the forehead

A

frontal

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20
Q

located at the anterior and superior aspect of the cranium anterior to the parietal bones. forms the roof of the orbits.

A

frontal

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21
Q

Structures on the frontal bone

A
Suparorbital margin
Supraorbital notch or foramen
Squamos part
Frontal sinus
FSSS
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22
Q

Bones lying at the lateral aspect of the cranium, inferior to the parietal bones

A

temporal

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23
Q

Weakest cranial bone

A

temporal

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24
Q

Part of the frontal bone that forms the superior border of the orbit.

A

Supraorbital margin

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25
Q

Small notch or hole respectively, is found at the medial third of the supraorbital margin

A

Supraorbital notch or foramen

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26
Q

Forehead part of the frontal bone

A

squamous part

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27
Q

Space that lies between the orbital and the squamous parts of the frontal bone

A

frontal sinus

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28
Q

Structures of the temporal bone

A
Squamous part
Zygomatic process
Zygomatic arch
Mandibular process
Mastoid process
External auditory meatus
Styloid process
Petrous portion of temporal bone
SZZMMESP
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29
Q

Thin, scalelike, superior expansion of the temporal bone forming the part of the lateral cranial wall

A

Squamous part of the temporal bone

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30
Q

Long, thin bone that extends anteriorly from the anteroinferior aspect of the squamous part of the temporal bone to articulate with the zygomatic bone.

A

Zygomatic process

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31
Q

Arch formed by zygomatic bone and zygomatic process

A

Zygomatic arch

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32
Q

Oval depression for articulation with the mandible, specifically the condyloid process of the mandible.

A

Mandibular Fossa

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33
Q

the breast-shaped projection extending inferiorly from he posterior aspect of the mastoid part

A

mastoid process

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34
Q

Large canal posterior to the mandibular fossa that opens into the ear

A

external auditory meatus

35
Q

another name for external auditory meatus

A

external acoustic meatus

36
Q

Long, slender, pencil-like process antermedial to the external auditory meatus that extends inferiorly

A

Styloid process

37
Q

Hard, wedge-shaped portion between the occipital and sphenoid bones that houses the middle and inner ear

A

Petrous portion of the temporal bone

38
Q

Why is the sphenoid bone called the sphenoid?

A

Wedged between the cranial and facial bones

39
Q

Bone that forms the base of the cranium anterior to the temporal and occipital bones; also forms the floor and lateral walls of the orbit

40
Q

Structures on the sphenoid bone

A
Body
Sella turcica
Greater wings
Lesser wings
Pterygoid processs

Brody seduced Genny into Letting him Party

41
Q

Cubical portion of the sphenoid in the midline of the base of the cranium anterior to the occipital bone. Hollowed out to form two sphenoid air sinuses

A

Body of the sphenoid

42
Q

Deep depression on the superior aspect of the body of the sphenoid.

A

Sella turcica

43
Q

Posterior border of sella turcica is formed by the _____

A

dorsal sellae

44
Q

Indentation in the sella turcica housing the pituitary gland

A

Hypophyseal fossa

45
Q

Two broad lateral extensions from the body of the sphenoid. Contains openings including the foramen rotunda, oval, and spinousum.

A

Greater wing

46
Q

Where does the middle meningeal artery pass?

A

Foramen spinosum

47
Q

Which foramens are in the greater wing of the spenoid

A

Foramen rotunda
Ovale
Spinosum

48
Q

Thin triangular projections that extend into the posterior wall of the orbit and form the anterior aspect of the superior surface of the body

A

Lesser wing

49
Q

Extends inferiorly from the junction of the greater wing of the body.

A

Pterygoid process

50
Q

Separates the medial and lateral pterygoid plate

A

pterygoid fossa

51
Q

Lies laterally to the choanae

A

medial pterygoid

52
Q

Sievelike bone at anterior base of the cranium between two orbits.

53
Q

Structure sof ethmoid

A
Cribiform plate
Perpendicular plate
Lateral mass
Middle nasal concha
Superior nasal concha
54
Q

Forms the anterior aspect of the cranium and has numerous foramina for the passage of nerve fibers.

A

Cribirom plate

55
Q

Cribiform plate surrounds the base of the ____

A

crista galli

56
Q

thin plate perpendicular to and extends inferiorly from the crbiform plate to form the superior aspect of the nasal septum

A

Perpendicular plate

57
Q

Consists of lateral aspects of the ethmoid made of large air cells forming part of the orbit.

A

Lateral mass

58
Q

Free, convoluted inferior margin of the medial plate of the lateral mass

A

middle nasal concha

59
Q

part of the lateral mass superior to the middle nasal concha. Difficult to see from an anterior view of skull.

A

Superior nasal concha

60
Q

How many facial bones are there?

61
Q

Bone forming the upper jaw

62
Q

Structures of the maxilla

A

Body
Alveolar process
Palatine process
Infraorbital foramen

BAPI!

63
Q

Pyramidal in shape, contains a large air sinus

A

Body (contains maxillary sinus)

64
Q

The arch on the inferior border of the maxilla; it bears cavities into which the teeth of the upper jaw are set.

A

Alveolar process

65
Q

Found on the anterior surface of the body inferior to the infraorbital margin

A

Infraorbital foramen

66
Q

Lower jaw bone

67
Q

Hose-shoe shaped bone consisting of a horizontal body and paired rami which are perpendicular to the body

68
Q

Structures of the mandible

A
Alveolar process
Mental foramen
Angle
Condyloid process
Neck
Coronoid process
Mandibular foramen
69
Q

Arch on the superior border of the body into which the teeth of the lower jaw are set

A

Alveolar process

70
Q

Foramen on the lateral aspect of the body, inferior to the second premolar tooth

A

mental foramen

71
Q

Formed by the intersection of the ramus and the body of the mandible.

72
Q

Sits on the superior border of the ramus and articulates with the mandibular fossa of the temporal bone

A

condyloid process

73
Q

Constricted area of the ramus inferior to the head of the mandible

A

Neck of the mandible

74
Q

Found on the superior border of the ramus

A

Coronoid process

75
Q

Large central foramen on the medial surface of the ramus, holds the inferior alveolar nerve

A

Mandibular foramen

76
Q

Bones helping form the zygomatic arch that connects the zygomatic and temporal bones

A

Zygomatic Bones

77
Q

Irregular bones that form part of the lateral wall and floor of the orbit

A

Zygomatic bones

78
Q

Bones helping form the nose

A

nasal bones

79
Q

Two small bones form the anterior and superior aspect of the nose, inferior to the frontal bone

A

nasal bones

80
Q

Thin, small irregular bones form the anterior portion of the medial wall of the orbit

81
Q

Small, curved, irregular shell-like bone, that extends horizontally along the lateral nasal wall superior to the hard palate

A

Inferior nasal conchae (turbinate)

82
Q

Irregular bones form the posterior portion of the hard palate posterior to the maxilla

83
Q

Vertical irregular bone in the median plane extending between the hard palate inferiorly and the sphenoid and ethmoid superiorly.