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 Anatomy of the Human Skull

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مُساهمةموضوع: Anatomy of the Human Skull   السبت أبريل 25, 2009 10:30 am

The diagrams below show the major external features of the human cranium and the major skull bones. The names in black are facial bones, those in red are cranial bones, and those in blue are features of the bones


side view



.

frontal view





FeatureLocationDescription
angle of jaw or mandibleback of jawthe corner of the jaw where the mandible body turns upwards into the ramus
aveolar processmaxilla, root of teethrugosities associated with tooth development
condyle of mandibletop of ramus of mandiblea ball-like end to the ramus of the mandible that forms a hinge with the temporal bone
coronal suturetop of head between frontal and parietal cranial bonesone of the major joints or sutures between the plates of the frontal and parietal cranial bones
external acoustic meatusbetween ramus of mandible and mastoid processa hole in the temporal cranial bone allowing the passage of sound to enter the inner ear
ethmoid boneeye cavitya cranial bone forming part of the eye cavity
forehead boss or frontal tuberosityforeheada feature of the frontal bone that forms the "bumps" in the forehead above the eyebrows
frontal bonetop of face (forehead) and front top of headone of the major cranial bones that forms the forehead and front top of the head; roughly covers the frontal lobes of the brain
glabellacenter of foreheadan area in the center of the forehead, between the eyebrows, that assumes various shapes on different individuals
lacrimal boneinner corner of eye socketa small bone forming a cavity for the tear gland
lambdoid sutureback of headsuture or joint between the occipital and parietal cranial bones
mandible or jaw bonelower part of jawthe lower jaw bone is the only skull bone that moves, i.e., during mastication, speech, and expression; carries the lower teeth
maxillaupper part of jawthe two maxillae form the center of the face with many attaching muscles; carry the upper teeth; form part of the eye orbit; act like keystones into which the other facial bones fit
mastoid processlower part of temporal bone, behind ramus of jawbuilt up area of the lower temporal bone where important neck muscles attach
mental protuberancechin bossa feature of the mandible at the lower front part of the chin which underlies part of the chin boss
mental tuberositieschin bossa dual bulbous formation of the mandible that underlies part of the chin boss
nasal bonenoseforms the upper part of the nose and nasal bridge; the lower part of the bridge is formed of cartilage
nasal conchanasal cavityformations creating part of the nasal cavity
nasal spinecenter of nosefeature of maxilla facial bone at center of nose to which septum is attached
occipital bonethe lower rear of the heada major cranial bone at the lower back of the head; covers occipital lobe of the brain
parietal bonetop and side of heada major cranial bone that froms part of the top, back, and side of the head and roughly covers the parietal lobe of the brain
ramus of mandibleback part of the mandiblethe more vertical part of the mandible
sphenoid bonetemple and eye orbit areaa cranial bone that forms part of the eye cavity
squamosal sutureside of head between parietal and temporal bonesone of the major joints or sutures between the parietal and temporal cranial bones
supraorbial foramenupper orbit of eyea hole in the frontal bone where nerves and blood vessels pass through; forms a notch in the orbit of the eye
supraorbital processeyebrowsa formation of the frontal bone above the orbit of the eye, under and above the eyebrows that affects the appearance of the eyebrows
temporal boneside of the head, above the eara cranial bone on the side of the head that roughly covers the temporal lobe of the brain; it extends down behind the ear towards the jaw
temporal linesfront part of temple and lower part of frontal boneslines in the frontal bone around the temple
volmernasal cavitya facial bone on the centerline of the nose that forms part of the nasal cavity
zygomatic bonecheekthe principal cheek bone; origin of zygomatic and other facial muscles
zygomatic processbones bordering zygomatic bonethe temporal and maxilla bones have areas next to the zygomatic bone



good luck

dr.aya
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Anatomy of the Human Skull
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