A&P.tricOH.skeleton.fall2008
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| bone-spongy - cancellous | small spaces surrounded by matrix
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| bone- compact | bone matrix with few small spaces
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| tuberosity | a large tubercul or rounded elevation; especially on bone surface
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| crest | prominent ridge
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| trochanter | one of the boney prominences developed from independent osseous center-upper extremity of femur - NOTE: humans have two - horses have three
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| trochanter | Horses canter, humans run on two feet-two on femur
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| bone - line | low ridge
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| tubercle | small rounded bump
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| epicondyle | "upon a condyle" a slight elevation from the surface of a bone, giving attachment to a muscle or ligament
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| condyle | a rounded articular surface at the extremity of a bone - like a condum with a rounded end
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| spine | a short, sharp thornlike process of bone L. "a thorn"
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| head - bone | enlarged end
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| ramus | part of an irregularly shaped bone, smaller than a "process" that forms an angle with the main body
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| ramus | "ram us" with a horn-bony projection (but not too large)
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| meatus | a passage of a channel, especially the external opening of a canal L. a passage
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| meatus | "meat us" at the Ear canal
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| sinus | a cavity or hollow space in bone or other tissues L. sinus "cavity"
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| fossa | a depression - more or less LONGITUDINAL in shape below the level of the surface of a part L. Trench or ditch
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| fossa | "fossa" lost ya in the LONG ditch
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| foramen | an aperature or perforation through a bone or a membranous structure L. an aperture
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| foramen | L. an aperture - French "foro" to pierce
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| bones of skull - supra-orbital margin | j
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| mastoid process | Gr. resembling a breast
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| mastoid process | the nipplelike projection of the petrous part of the temporal bone-hangs down behind ear
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| mastoid air cells | the mastoid process is filled with cavities - connected to the middle ear
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| mastoid process holds what muscles? | neck muscles involved in rotation of the neck
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| zygomatic process | Gr. a bar or bolt Fr. zygon "yoke"
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| zygomatic process | the rough projection from the maxilla that articulates with the zygomatic bone
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| zygomatic arch | the arch formed by the temporal process of the sygomatic bone as it joins the zygomatic process of the temporal bones
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| styloid | Peg-shaped Gr stylo- plus "eidos" resemblance
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| styloid process of the temporal bone | the "stylus" projecting from the temporal bone
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| mandibular or glenoid fossa | articulation point between the mandible & skull on TEMPORAL bone
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| where is the mandibular fossa | a depression on the TEMPORAL bone
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| malleus, incus & stapes | bones in ear
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| occipital bone | the back of the head
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| occipital condyles | articulation point between skull and first vertebra
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| Occipatal bone - the foramen magnum | the large hole at the base of the skull - opening point where brain & spinal cord connect
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| occipatal bone - lambdoidal suture | the suture which resembles the greek letter "lambda" - located on the superior of the occipatal bone -
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| sphenoid bone - | "sphenoid" Gr. sphenoeides "wedge" plus eides "resemblance"
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| sphenoid bone - sella turcica | L. sella "saddle"
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| sphenoid bone - lesser and greater wings | projections
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| sphenoid sinuses | the sphenoid has a bony sinus
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| ethmoid bone - | bone inside skull, forms part of orbit of eyes, part of nasal cavity
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| ethmoid bone - cribiform plate | cribri - "sieve" - form "forma" sievelike; containing many perforations
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| ethmoid bone - crista galli | "crest" - triangular midline process of the ethmoid bone - extends from cribiform plate
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| ethmoid bone - perpendicular plate | part of ethmoid bone that forms nose & connects to vomer-in nasal septum
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| nasal septum | L septeum - a partition
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| fracture of cribiform plate | in auto accident, cribiform plate may be fracture (if no air bags) driver's nose strikes the steering wheel
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| nasal conchae | superior & middle - look like conches - increase surface area in nasal cavity - moistening & warming of air
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| zygomatic (malar) bones | a quadrilateral bone that forms the prominence of the cheek-articulates with fraontal, sphenoid, temporaral and maxillary bone
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| nasal bones | maxillae; maxillary sinuses; alveolar process; infraorbital foramen; palatine process
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| maxillary sinuses | irregularly shaped bone-supporting superior teeth & form part of the orbit, hard palate, & nasal cavity
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| alveolar process | alveolus "small cell, cavity or socket"
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| infraorbital foramen | small hole below eyesocket
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| "infra" | means a position below the part denoted by the word to which it is joined
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| vomer | a flat bone-trapezoidal shape forming part of nasal septum
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| Palatine bones | irregularly shpaed bone posterior to the maxillae
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| mandible (6 pieces) | condylar process; coronoid process; alveolar process; body; angle; ramus
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| mandible - condylar process | the "condum" on the end of the mandible where it articulates with the jaw
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| coronoid process | a sharp triangular process from a bone
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| mandible - coronoid process | the triangular, anterior process of the mandible -
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| mandible - alveolar process | sockets for teeth
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| mandible - body | main part of mandible
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| mandible - angle | angle formed by lower posterior portion of mandible
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| mandible - ramus | projection-angled on mandible near middle of posterior
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| lacrimal bones | L. "lacrima" tears - relating to tears; tear ducts -
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| lacrimal bones | an irregularly rectangular thin plate, part of the medial wall of the orbit behind the frontal process of the maxilla
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| inferior nasal conchae | the lowest bone in nasal septum that looks like a conch shell
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| hyoid bone | NOT attached to another bone; floats below mandible & serves as attachment for some tongue muscles
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| nasal septum | vomer & perpendicular plate of ethmoid bone - plus hyaline cartilage
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| superficial facial bones | kkk
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| deep facial bones |
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| paranasal sinues (4 kinds) | frontal - ethmoidal labyrinth - sphenoidal sinus - maxillary sinus (named for bones in which they are located)
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| what is "keystone" of cranial floor? | Check - is it sphenoid??
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| what is "keystone" of face? | check - is it maxilla?
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| what is a cleft palate? | facial bones don't fuse - palatine processes of the maxillae don't fuse with one another-opening between the nasal and oral cavities [cleft lip is if maxillae don't form properly]
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| fontanels (4) | frontal; posterior (occipital); anterolaterel (sphenoidal) and poterolateral (Mastoid-remember mastoid process of occipital bones -this is in that area)
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