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Temporal Bone
| Question | Answer |
|---|---|
| Squama (squamous portion) | flat part above zygomatic process |
| 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) |
| Mastoid process | sort of rounded, triangular shaped process that is fairly prominent—kind of rough surface |
| Groove for the middle temporal artery | pretty prominent groove located right above mastoid process |
| External auditory meatus | huge opening for ear canal which is located right beneath end of zygomatic process |
| Styloid process | really thin, sharp bony projection |
| Vaginal process | this is sort of a ridge above the styloid that ensheaths the base of the styloid process |
| Zygomatic process | part of zygomatic process located on temporary bone |
| 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 |
| Tempromandibular articular fossa (glenoid fossa) | depression (fossa is a depression) located right underneath the end of the zygomatic process – very large fossa |
| Postglenoid process | little bump on back wall of the glenoid fossa (sort of same location as articular eminence |
| Suprameatal crest and supramastoid crest | continuations of the zygomatic process which are above their respective parts |
| Mastoid foramen | very very far posterior of mastoid process—all the way at the back of the temporal bone |
| Parietal notch | sort of inpocketing where the parietal bone fits into the temporal bone (wide and diffuse) |
| Impression for branch of middle meningeal artery | located on endocranial surface – single line formed as a result of movement of middle meningeal artery |
| 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 |
| Sulcus for the sigmoid sinus | very large, wide groove – look at figure in book for placement |
| Foramen for the internal carotid artery (carotid canal) | |
| Jugular fossa | just medial to the base of the styloid process – a very deep fossa, with a hole through the skull |
| Stylomastoid foramen | immediately posterior to the base of the styloid process—pretty easy to see, deep and circular foramen |
| Digastric groove (mastoid notch) | deep groove right next to mastoid process |
| Occipital groove | just medial to mastoid notch, slightly more shallow |
Created by:
AdamJFLA
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