Skull Flashcards

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1
Q

Cranial vault that protects brain, houses organs of hearing and balance, and is site of muscle attachment for head and neck.

A

Neurocranium

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2
Q

Domelike roof of neurocranium

A

Calvarium

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3
Q

Lateral view: Anterior bone in skull

A

Frontal bone

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4
Q

Lateral view: Posterior bone in skull

A

Occipital bone

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5
Q

Lateral view: two bones posterior to frontal

A

Parietal bones

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6
Q

Lateral view: Bones inferior to parietal

A

Temporal

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7
Q

Lateral view: Bone anterior to temporal

A

Sphenoid bone

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8
Q

Lateral view: Bone deep and inferior to frontal bone.

A

Ethmoid

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9
Q

Where is the coronal suture?

A

Frontal bone and parietal bones

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10
Q

Where is the lambdoid suture?

A

Parietal bones and occipital bones

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11
Q

Where is the sagittal suture?

A

Right and left parietal bones

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12
Q

Where is the squamous suture?

A

Temporal and bone and parietal bone

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13
Q

What are the membranous interval at the margins of cranial bones in fetal skull?

A

Fontanelles

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14
Q

What is the large membranous interval on top of fetal skull?

A

Anterior fontanelle

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15
Q

What is the membranous interval on back of fetal skull?

A

Posterior fontanelle

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16
Q

What is the membranous interval on side of fetal skull anterior to temporal skull?

A

Sphenoid fontanelle

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17
Q

Anterior view: what is the bone inferior to frontal bone and anterior to nasal septum?

A

Nasal bone

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18
Q

Anterior view: what is the cheekbone called?

A

Zygomatic bone

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19
Q

Anterior view: what is the large bone surrounding nasal and holding teeth?

A

Maxilla bone

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20
Q

Anterior view: what is the bone inferior to maxilla bone?

A

Mandible

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21
Q

Anterior view: bone lateral to nasal and maxillary bone. (Hint: canal for tear ducts)

A

Lacrimal bone

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22
Q

Anterior view: area that houses teeth from maxilla bone

A

Alveolar area

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23
Q

Anterior view: top half of nasal septum

A

Perpendicular plate (of ethmoid)

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24
Q

Anterior view: bottom half of nasal septum

A

Vomer

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25
Q

Perpendicular plate of ethmoid and vomer make up the _____ _____.

A

Nasal septum

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26
Q

Bone at the most medial of the orbital opening. (Revise)

A

Nasolacrimal canal

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27
Q

Hole under eyes on maxilla bone.

A

Infraorbital foramen

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28
Q

Indent at precipice of superior orbital area (revise)

A

Supraorbital notch/foramen

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29
Q

Top half of the boomerang-like hole thru eye socket.

A

Superior orbital fissure

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30
Q

Bottom half of the boomerang-like hole thru eye socket.

A

Inferior orbital fissure

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31
Q

Supraorbital notch/foramen is branch of…

A

Cranial nerve V1 (supraorbital nerve)

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32
Q

Infraorbital foramen is a pathway for the branch of…

A

Cranial nerve V2 (infraorbital nerve)

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33
Q

Inferior orbital fissure is a pathway for the branch of…

A

Cranial nerve V2 (infraorbital nerve)

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34
Q

Nasolacrimal canal is a passage for…

A

Nasolacrimal duct

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35
Q

Superior orbital fissure is a pathway for the branch of…

A

Cranial nerves III, IV, VI, and V¹

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36
Q

Lateral view: What is the top half of sphenoid bone called?

A

Greater Wing (of sphenoid)

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37
Q

Lateral view: what is the thinner, top part of the temporal bone called?

A

Squamous portion (of temporal)

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38
Q

Lateral view:

What is the little hole at bottom of temporal bone?

A

External acoustic meatus

39
Q

Lateral view: bone anterior to sphenoid bone (cheek)

A

Zygomatic bone

40
Q

Bump at bottom of occipital bone?

A

External occipital protuberance

41
Q

_______ process + ______ process = _______ arch

A

Zygomatic process + temporal process = zygomatic arch

42
Q

Inferior view: roof of mouth (anterior)

A

Palatine process (of maxilla)

43
Q

Inferior view: roof of mouth (posterior to Palatine process)

A

Palatine bone

44
Q

Inferior view: crevice for mandible attachment

A

Mandibular fossa

45
Q

Inferior view: big hole above occipital condyle

A

Carotid canal

46
Q

Inferior view: smooth joint surface anterior to big hole for brainstem

A

Occipital condyle

47
Q

Inferior view: 2 plates side by side on each side of vomer

A

Lateral pterygoid plate and medial pterygoid plate

48
Q

Inferior view: pointing bone medial to mandibular condyle

A

Styloid process

49
Q

Inferior view: opposite to styloid proccess

A

Mastoid process

50
Q

Inferior view: inbetween styloid process mastoid process

A

Stylomastoid foramen

51
Q

Carotid canal is a passage for…

A

Internal Carotid Artery

52
Q

Stylomastoid foramen is a passage for…

A

Cranial nerve VII (facial nerve)

53
Q

Occipital condyle articulates with…

A

First cervical vertebrae

54
Q

Mastoid process is attachment of…

A

SCM

55
Q

Mandibular fossa articulates with…

A

Mandible

56
Q

Cribriform plate (of ephmoid bone) is important passage for…

A

CN I (olfactory nerves)

57
Q

Optic canal is important passage for…

A

CN II (optic nerves)

58
Q

Superior orbital fissures important passage for…

A

Cranial nerves III, IV, V¹ and VI

59
Q

Foramen rotundum important passageway for…

A

CN V2 (maxillary branch of trigeminal N.)

60
Q

Foramen ovale important passageway for…

A

CN V3 (mandibular branch of trigeminal N.)

61
Q

Foramen spinosum important passageway for…

A

Middle meningeal vessels

62
Q

Foreman lacerum important passageway for…

A

NOT true opening. Filled with cartilage when alive.

63
Q

Internal acoustic meatus important passageway for…

A

CN VIII (vestibulocochlear)

64
Q

Jugular foramen important passageway for…

A

Internal jugular V., Cranial nerves IX, X, and XI

65
Q

Hypoglossal canal important passageway for…

A

CN XII (hypoglossal N.)

66
Q

Foramen magnum important passageway for…

A

Vertebral arteries, spinal cord, CN XI (accessory N.)

67
Q

Crista Galli is…

A

Attachment site for Falx cerebri

68
Q

Sella turcica (of temporal) does what?

A

Houses pituitary gland

69
Q

Petrous portion (of temporal) does what?

A

Protects structures of inner ear.

70
Q

Condylar process does what?

A

Articulates with mandibular fossa

71
Q

Mental foramen does what?

A

Is passage for mental nerve and vessels

72
Q

Mandibular foramen does what?

A

Passage for inferior alveolar nerve (injected with Anesthesia during dental procedures.)

73
Q

What about the neurocranium?

A

Protects the brain
Houses the organs of hearing and balance
Site attachment for head and neck muscles
Consists of 4 singular bones (frontal, occipital, ethmoid, and sphenoid)
And 2 sets of paired bones (parietal and temporal.)

74
Q

What is the domelike “roof” of the neurocranium?

A

Calvarium

75
Q

What are the 11 openings of the cranial floor?

A
Cribriform plate of the ethmoid bone 
Optic canal
Foramen rotundum 
Foramen ovale 
Foramen spinosum 
Foreman lacerum
Carotid canal 
Internal acoustic meatus 
Jugular foreman 
Hypoglossal canal 
Foramen Magnum
76
Q

Cribriform plate is important passage for…

A

CN I (olfactory nerve)

77
Q

Optic canal is an important passage for…

A

CN II (optic nerve)

78
Q

Superior orbital fissure is an important passage for…

A

CN V¹, III, IV, and VI

79
Q

Foramen rotundum is an important passage for…

A

CN V2 (maxillary branch of the trigeminal N.)

80
Q

Foramen ovale is important passage for…

A

CN V3 (mandibular branch of trigeminal N.)

81
Q

Foreman spinosum important passage for…

A

Middle meningeal vessels

82
Q

Foreman lacerum important passage for…

A

Not a true opening. Covered in cartilage when alive.

83
Q

Internal acoustic meatus important passage for…

A

CN VIII (vestibulocochlear)

84
Q

Jugular foramen important passage for…

A

Internal jugular V., Cranial nerves IX X and XI

85
Q

Hypoglossal canal important passage for…

A

CN XII (hypoglossal N.)

86
Q

Foramen rotundum important passage for…

A

Vertebral arteries, spinal cord, CN XI

87
Q

Crista Galli important for…

A

Attachment site for Falx cerebri

88
Q

Sella turcica important for…

A

Houses pituitary gland

89
Q

Petrous portion (of temporal) important for…

A

Protecting structures of inner ear

90
Q

What are 6 attributes of the nasal area of skull?

A

Ethmoid bone. Perpendicular plate of ethmoid.

Superior nasal concha of ethmoid, middle nasal concha of ethmoid, inferior nasal concha (not of ethmoid) and vomer

91
Q

Name 8 features of the mandible.

A
Condylar process
Angle of mandible 
Body 
Mental foramen 
Alveolar area
Mandibular foramen 
Coronoid process
92
Q

Condylar process does what?

A

Articulates with mandibular fossa

93
Q

Mental foramen’s purpose is what?

A

Passage for mental nerve and vessels

94
Q

Mandibular foramen purpose is?

A

Passage for inferior alveolar nerve

Where you’re injected with Anesthesia during dental procedures.