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Shortened Objectives for Dissection 6 – Face, Cranium, Cranial Contents, Eye1.Identify the bones of the cranium and face and the three intracranial fossae. Identify the bones and foramina of theorbit. Demonstrate each cranial nerve on the brain and identify the foramen through which it exits the cranialcavity. Describe the function(s) of each cranial nerve.
BOUNDARY BETWEEN MIDDLE AND POSTERIOR FOSSAE: PETROUS PORTION OFTEMPORAL BONEoPosterior fossa– largest and deepest cranial fossae, contains occipital lobe, cerebellum, pons, and medullaForamina: foramen magnum, jugular foramen, hypoglossal canal, condylar canal, mastoid foramenBones: occipital and petrous temporal bone, with small contributions from parietal and sphenoidInternal occipital crest – posterior to the foramen magnum; divides posterior part of fossaeinto two cerebellar fossaeThe orbit – has a base, 4 walls, and an apex; forms a pyramidal shapeoBones – sphenoid, zygomatic, frontal, maxilla, ethmoid, lacrimal, palatine (forming posterior floor of nasalcavity in back of mouth); lined with periorbita (periosteum)Roof – formed mainly by frontal bone and lesser wing of sphenoid; separates orbit from anterior fossaMedial wall – ethmoid bone with contributions from frontal, maxilla, lacrimal, and sphenoidForms lacrimal groove and fossa for lacrimal sacLateral wall – zygomatic bone and greater wing of sphenoid

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Term
Fall
Professor
NoProfessor
Tags
Internal carotid artery, Facial nerve, Arteries of the head and neck, superior orbital fissure

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