Temporal Bone
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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Squama (squamous portion) | flat part above zygomatic process
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Petrous pyramid | dense, bony part – if you look at it from a side view, it looks like a pyramid (maybe?) (look at picture from webcamera)
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Mastoid process | sort of rounded, triangular shaped process that is fairly prominent—kind of rough surface
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Groove for the middle temporal artery | pretty prominent groove located right above mastoid process
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External auditory meatus | huge opening for ear canal which is located right beneath end of zygomatic process
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Styloid process | really thin, sharp bony projection
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Vaginal process | this is sort of a ridge above the styloid that ensheaths the base of the styloid process
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Zygomatic process | part of zygomatic process located on temporary bone
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Articular eminence | look at figure in book – it is a bump that is found along the back wall which forms the glenoid fossa (not along the wall that forms part of the zygomatic process
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Tempromandibular articular fossa (glenoid fossa) | depression (fossa is a depression) located right underneath the end of the zygomatic process – very large fossa
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Postglenoid process | little bump on back wall of the glenoid fossa (sort of same location as articular eminence
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Suprameatal crest and supramastoid crest | continuations of the zygomatic process which are above their respective parts
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Mastoid foramen | very very far posterior of mastoid process—all the way at the back of the temporal bone
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Parietal notch | sort of inpocketing where the parietal bone fits into the temporal bone (wide and diffuse)
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Impression for branch of middle meningeal artery | located on endocranial surface – single line formed as a result of movement of middle meningeal artery
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Internal acoustic meatus | large hole on endocranial surface—if you were to pass a thread through from the EAM, you would go through the internal acoustic meatus
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Sulcus for the sigmoid sinus | very large, wide groove – look at figure in book for placement
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Foramen for the internal carotid artery (carotid canal) |
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Jugular fossa | just medial to the base of the styloid process – a very deep fossa, with a hole through the skull
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Stylomastoid foramen | immediately posterior to the base of the styloid process—pretty easy to see, deep and circular foramen
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Digastric groove (mastoid notch) | deep groove right next to mastoid process
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Occipital groove | just medial to mastoid notch, slightly more shallow
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Created by:
AdamJFLA
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