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where are temporal bones (irregular bones) situated
sides of skull
what part of the face does the temporal bone support
the temple, houses the structures of the organ of hearing
temporal bone nerves and vessels
lower 7 CN's & major vessels to form the brain transverse the temporal bone
five parts of temporal bone:
1. Squama temporalis
2. Mastoid portion
3. Petrous portion (petrosal ridge)
4. Tympanic part
5. Styloid process
very thin that it's translucent
scaly appearance
temporalis muscle attaches to this area
heavier and rough
attaches to auricular muscles of the outer ear
foramina (holes) throughout bone allow nerves, arteries and veins to pass through skull
dense bone, pyramidal & wedged at the base of skull between sphenoid & occipital bones - forms part of endocranium
protects inner ear from damage
fuses with inner pieces of mastoid and squama temporalis portions
separate from the rest of the temporal pieces at birth
fuses together with the rest of the temporal bones in most mammals
borders the external acoustic meatus (cartilaginous outer ear)
attachment for muscle
cavities and canals found on:
Anterior surface
Posterior surface
Inferior surface
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