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30 Cards in this Set
- Front
- Back
The cranium bone is composed of ______ large flat bones.
List all of these bones. |
8
Frontal Parietal (2) Temporal (2) Occcipital Sphenoid Ethmoid |
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What do the parietal bones form?
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the superior and lateral walls of the cranium,
the coronal suture with the frontal bone |
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Where are the parietal bones located?
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they meet at the sagital suture (midline of the skull)
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What does the frontal bone form?
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the forehead
the bony projections underneath the eyebrows the superior part of the eye's orbit |
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The frontal bone contains _____________ and connects to the _______________.
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frontal sinus
nasal cavity |
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Describe the formation/fusion of the frontal bone.
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grows as 2 halves
completely fused by 5 or 6 |
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The temporal bones are composed of ______ important bone making processes.
List all of these processes. |
5
external acoustic (auditory) meatus styloid zygomatic mastoid jugular |
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Where are the temporal bones located?
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lies inferior to the parietal bones and join he at the squamous sutures
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External Acoustic (Auditory) Meatus
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ear canal which leads to the ear drum
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Styloid Process
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needle-like projection used to attach tendons for neck muscles (just below acoustic meatus)
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Zygomatic Process
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thin bridge of the bone joins the cheekbone (zygomatic bone)
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Mastoid Process
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rough projection and inferior to the auditory meatus, full of air cavities, close to inner ear, can cause ear infection
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Jugular Foramen
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at the function of the occipital and temporal bone, juldi vein passes here, next to the internal acoustic meatus and the carotid canal
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What does the occipital bone form?
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the floor and back of the skull
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Where is the occipital bone located?
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joins the parietal bone at the lambdoid suture
occipital clondyles rest on the vertebrae |
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Where is the forman magnum?
What does it do? |
located at the base of the occipital bone,
allows the spinal cord to exit the brain |
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The sphenoid bone is ______________ shaped.
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butterfly
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Where is the sphenoid bone?
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it's part of the bottom of the cranium
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The seila turcica (turk's saddle) holds ______________ and is part of the ______________ bone.
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pituitary gland
sphenoid |
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The forman evale is part of the __________ bone. What does it do?
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Sphenoid
allows nerves to pass to the chewing muscle |
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What does the Sphenoid bone form?
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forms part of the eye orbital and has two openings
1. optic canal 2. superior orbital tissue |
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Optic canal
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allows the optic nerve to pass through
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superior orbital tissue
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allows nerved to pass to control eye movements
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The ethmoid bone is __________ shaped.
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irregularly
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Where is the ethmoid bone located?
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anterior to the sphenoid bone
it is the roof of the nasal cavity it is part of the medial walls of the eye orbital |
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What does the ethmoid bone form?
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the superior and turbulence of air flow
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What is the crista galli (cock's comb) and where does it attach?
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the outermost portion of the brain
the ethmoid bone |
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(Ethmoid)
Cribriform plates allow.... |
nerve fibers from the nose to pass to the brain
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There are _______ facial bones.
> not in contact with the brain >provide shape of the face Name the bones. |
14
maxilla palatine zygomatic lacrimal nasal inferior nasal concha fragile bone vomer |
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Mandible
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> the lower jaw
> attached to the skull by the temporomandibular articulation > only moveable bone of the skull > the body is horseshoe shaped front and lateral side > 2 rami extend vertically from the posterior position of the body, and is part of the attachment site for muscles |