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Frontal Bone
Forehead Bone
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Supraorbital margin
brow bone
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glabella
smooth portion between the eyes
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Coronal Structure
(Crona - 'crown') crown cut suture
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Parietal Bones
- Outlined by all 4 adult sutures
- one parietal bone on each side
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Sagittal Suture
Suture right down the center (between the 2 parietal bones)
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Squamous Suture
Suture between the parietal bones & the temporal bones
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Occipital Bone
Back/Under side of skull
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External occipital protuberance
Midline bump on back of skull
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Foramen Magnum
Big hole of skull (Foramen='hole'/magnum='big')
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Occipital Condyles
WHere the skull sits on the 1st vertabre
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Lambdoid suture
Suture between occipital bone & parietal bones
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Temporal Bones
Tempal area (Temporal='time')
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Mastoid process
Bone behind ear on jaw
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External Acoustic meatus
Ear hole
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Zygomatic Arch (Zygomatic Process)
Arch that comes forward toward the zygomatic bone
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Styloid Process
Stylus looking bone that sticks out
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Jugular foramen
Next biggest holes (one on each side) irregular looking hole where jugular vain runs through
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Mandibular fossa
Depression where the jaw joints sit (Fossa='depression')
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Petrous
Part of temporal bone; ridgid part of temporal bone
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Zygomatic Bone
Cheek Bone
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Maxilla Bone
Front of face
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Alveolar margins
Sockets teeth fit in
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Palatine process
front part of the roof of the mouth
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nasal concha
curly bones in nasal cavity (2 on each side)
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Palatine Bone
Pallet/Roof of the mouth
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Vomer Bone
Bottom part of the nose that separates the 2 nostrels
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Lacrimal Bones
Lacrimal='tears'; bones of inner orbital area (tear duct area)
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Nasolacrimal Canal
Hole where tears drain to the nose
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Sphenoid Bone
Holds everything together (Bat or Butterfly Bone)
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Optic Foramen
Small rounded holes in eye sockets w/smooth edges; optic nerves run through these holes (nerves make an "X")
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Sella turcica
Depression in middle of sphenoid where petuitary gland lives
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Cribriform plate
Depression full of holes where smell nerves
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Crista Galli
Ridge of bone between the 2 cribriform plates
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Perpendicular plate
Top part of bone that splits nasal passage in half
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Alveolar Margin
Sockets your teeth fit into
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Mental Foramen
Hole in Chin
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Coronoid process
front part
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mandibular condyle
back part; part of jaw joint
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Paranasal Sinuses
- Mucosa-lined, air-filled spaces
- Frontal,Maxillary, Sphenoid, Ethmoid
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Frontal sinuses
Behind Forehead
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Maxillary sinuses
Behind Cheeks
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Sphenoid sinuses
behind ethmoid sinus
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ethmoid sinuses
behind eyes
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Fetal Skull Fontanels
Anterior, Posterior, Anterolateral
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Anterior (frontal) Fontanel
Soft Spot
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Posterior (occipital) Fontanel
Between parietal bones & occipital bones
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ANterolateral (sphenoid) Fontanel
Side of head
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Fetal Skull sutures
- Frontal
- Coronal
- Sagittal
- Lambdoid
- Squamous
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Frontal Suture
Only found on the fetal skull
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