Anatomy Final Review .docx - The skull - Neurocranium; 8...

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The skull-Neurocranium; 8 bones (4 single, 2 paired)-Frontal, parietal x2, temporal x2, occipital, sphenoid, ethmoid-House and protect the brain-Subdivision-Calvaria - cranial roof-Cranial base-Cranial base-Articulates with C1 vertebra-Contains many foramina for neurovasculature to enter and exit skull-Inferior view; sphenoid (spans the entire width of the skull from this view), temporal x2, and occipital-Internal surface; 3 cranial fossa; anterior, middle and posterior-Anterior = frontal lobes-Bones that contribute and their relative location; frontal (anterior), ethmoid (central), andsphenoid (body and lesser wings (posterior))-Middle = temporal lobes-Bones that contribute and their relative location; sphenoid (body (central)), sphenoid(greater wings (lateral)), and temporal (squamous and petrous parts (lateral))-Posterior (largest) = cerebellum and brainstem-Bones that contribute and their relative position; mainly occipital and temporal but smallcontributions from sphenoid and parietal-Depth of the cranial fossa increases from anterior to posterior; anterior highest, posterior lowest-Which allows for conforming to shape of the brain-Bones contributing from anterior to posterior (superior view); frontal -> ethmoid -> sphenoid -> 2(temporal and parietal) -> occipital-The ethmoid bone is the only bone that cannot be observed from the external surface of cranial baseFrontal bone;-Anterior aspect of neurocranium and cranial base-Forehead-Superior border of orbit-Osteological features; supraorbital margin and the supraorbital notch or foramen-Osteological features (superior view); frontal sinus (superior to orbits), orbital plates of frontal bone (contribute to roof oforbits)Parietal bone;-Superior and lateral aspects of the neurocranium-Located posterior to the frontal boneTemporal bone;-Located inferior to the parietal bones-Osteological features (superior view); internal acoustic meatus (canal leading to eardrum), petrous ridge (identifiespetrous portion), foramen lacerum-Osteological features (inferior view); zygomatic process, zygomatic arch, mandibular fossa (point of articulation withmandible), mastoid process, styloid process, stylomastoid foramen, external acoustic meatus, carotid canal, foramenlacerum, jugular foramen

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Term
Fall
Professor
Jadeski
Tags
Occipital bone, Bones of the head and neck, frontal bone, Osteological features

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