Cranium Flashcards

1
Q

Viscerocranium

A

Mandible, Maxilla, Zygomatic, Nasal, Ethmoid (except cribiform plate), Lacrimal, Pterygoid process of Sphenoid (lateral and Medial plates), Tympanic part of Temporal including styloid process, Palatine, Vomer, Inferior Nasal Concha

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2
Q

Neurocranium

A

Frontal, Temporal (petrous, mastoid, and squamous), Occipital, Parietal, Sphenoid, Cribiform plate of Ethmoid

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3
Q

Calvaria

A

Inner and outer tables with cancellous diploe in the middle=marrow rich (primary source of red blood cells)

  • Frontal, Parietal, occipital, Temporal (squamous)
  • Neurocranial injuries=intracranial hemorrhage
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4
Q

Ethmoid

A
Middle Nasal Concha
Orbital Plate (paper like=lamina papyracea)
Crista Galli
Perpendicular Plate (nasal septum)
Ethmoid Air Cells
Cribiform Plate
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5
Q

Sphenoid

A
Lesser and Greater Wings
Superior Orbital Fissure
Pterygoid Process:medial lateral plates
Pterygoid  canal
Foramen Rotundum
Foramen Spinosum
Foramen Ovale
Optic Canal 
Sella Turcica (hypophyseal fossa-pituitary gland)
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6
Q

Temporal

A
Squamous Part
Petrous part
Tympanic Part 
Mastoid Part
Styloid Process
Internal and External Acoutstic Meatus
Zygomatic Process 
Mandibular Fossa/articular tubercle
Stylomastoid foramen
Jugular Fossa
Carotid Canal
Apparatus of Inner Ear (malleus, Incus, Stapes)
Auditory Tube
Petrous Ridge
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7
Q

Mandible

A
Head Neck mandible
Ramus
Mandibular Foramen (inner)
Mylohyoid groove
Coronoid Process
Mental Protuberance 
Mental Foramen
Mandibular Angle
Alveolus
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8
Q

Temporomandibular Joint

A

Only moving joint of skull

*Head of mandible rides articular tubercle, not against mandibular fossa

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9
Q

Bones of Orbit

A

Frontal, Maxilla, Zygomatic, Spenoid, Ethmoid, Palatine, Lacrimal

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10
Q

Bones of Nasal Cavity

A

Maxilla, Ethmoid, lacrimal, nasal, vomer, palatine bones, sphenoid (medial pterygoid plates), Inferior nasal Concha

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11
Q

Paranasal Sinuses

A

Frontal, Maxillary, Sphenoidal, ethmoid air cells

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12
Q

Sagital Suture

A

Along sagital plane between paired parietal bones

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13
Q

Coronal Suture

A

Along coronal plane between frontal and parietal

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14
Q

Lamboidal Suture

A

Between occipital and parietal

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15
Q

Metopic (frontal) Suture

A

Fully fused along sagital plane of frontal bone

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16
Q

Squamosal suture

A

Suture between squamous and parietal bone

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17
Q

Occipitomastoidal suture

A

Suture between occipital and petrous part of temporal

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18
Q

Sphenoparietal Suture

A

Short suture between sphenoid and parietal bones

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19
Q

Extranumerary Bones

A

Incan/Wormian-near occipital protuberance…broken fused evolutionary bones

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20
Q

Le Fort Fracture I

A

Low, maxilla alveola-horizontal

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21
Q

Le Fort Fracture II

A

low, mid maxilla involving inferior orbital -pyramidal

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22
Q

Le Fort Fracture III

A

involve zygomatic arch, transverse

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23
Q

Positional Plagiocephaly

A

“oblique head” “flat head syndrome”

-due to repetitive head positioning during early growth…oblique slant to the sagital axis

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24
Q

Craniosynostosis

A

deformaties resulting from premature closure of sutures…genetic in Nature

25
Q

Sacphocephaly

A

premature sagital suture (40-60%)

26
Q

Brachycephaly

A

premature coronal (20-30%)

27
Q

PLagiocephaly

A

premature of 1 side of either coronal, lamboidal or both (<4%)

28
Q

Trigoncephaly

A

Premature metopic (frontal) (<10%)

29
Q

Kleeblattschadel (clover)

A

premature coronal, lamboid, and sagital…extremely rare

30
Q

Microcephaly

A

premature fusion of all sutures and fontanelles

31
Q

Hydrocephaly

A

Congenital inability to absorb CSF resulting in increased intracranial pressure that causes continued growth and expansion of calvaria bones along sutures…fixed with shunt to venous system

32
Q

Bregma

A

point where sagital and coronal sutures meet

33
Q

Lambda

A

point where sagital and lamboidal suture meets

34
Q

Glabella

A

Most anterior point on frontal bone

35
Q

Nasion

A

Point of intersection of the nasofrontal suture and the mid-sagital plane

36
Q

Pterion

A

highly variable point intersection of frontal, temporal, sphenoid, and parietal bones…along sphenoparietal suture

37
Q

Anterior Cranial Fossa

A

Frontal Lobe of Cerebellum

38
Q

Middle Cranial Fossa

A

Temporal lobe of cerebellum

39
Q

Posterior Cranial Fossa

A

Cerebellum, Pons, medulla

40
Q

Supraorbital Foramen

A

Supraorbital nerve CN V1

41
Q

Infraorbital Foramen

A

Infraorbital nerve CN V2

42
Q

Mental Foramen

A

Mental Nerve CN V3

43
Q

Greater and Lesser Palatine Foramen

A

Greater and Lesser palatine nerve CN V2 and vessels (by back molars)

44
Q

Incisive Foramen

A

Nasal Palatine nerve CN V2 and sphenopalatine vessels

45
Q

Stylomastoid Foramen

A

Facial Nerve (CN VII)

46
Q

Cribiform PLate

A

in anterior fossa

-Olfactory Nerve CN I

47
Q

Optic Canal

A

in anterior fossa

-optic Nerve CN II and opthalmic artery

48
Q

Superior Orbital Fissure

A

Oculomotor CN III, Trochlear CN IV, Opthalmic CN V1, Abducent CN VI

49
Q

Inferior Orbital Fissure

A

Infraorbital and zygomatic branches of maxillary CN V2

50
Q

Foramen Rotundum

A

Maxillary Nerve CN V2

51
Q

Foramen Ovale

A

Mandible Nerve CN V3 and Accessory Meningeal Artery

52
Q

Foramen Spinosum

A

Middle Meningeal Artery and Meningeal branch of mandible nerve CN V3

53
Q

Foramen Lacerum

A

Internal Carotid (carotid canal passes through horizontally

54
Q

Carotid Canal

A

Internal carotid artery

55
Q

Foramen Magnum

A

Medulla, vertebral arteries, Acessory nerve CN XI (entering skull after it comes of brainstem)

56
Q

Jugular Foramen

A

Inferior petrosal sinus becomes internal jugular vein, Glossalpharyngeal nerve CN IX, Vagus Nerve CN X, Accessory Nerve CN XI, and posterior menigeal artery

57
Q

Hypoglossal Canal

A

Hypoglossal Nerve CN XII

58
Q

Internal and External Acoustic Meatus

A

Facial Nerve CN VII going into internal meatus then passing out the stylomastoid foramen, Vestibulocochlear Nerve CN VIII