HUMB1004 Study Guide - Final Guide: Anterior Clinoid Process, Anterior Cranial Fossa, Dural Venous Sinuses
4 Aug 2018
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Contains anterior, middle and posterior cranial fossae. Groove by blood vessels: dural venous sinuses (drain the brain, thick walled veins, arteries. Includes- internal acoustic meatus + jugular foramen, foramen magnum: houses brain stem, occipital lobe, cerebellum. Temporal fossa: frontal, parietal, temporal and sphenoid bone, houses the temporalis muscle, mandibular fossa (in temporal bone, depression in temporal bone that articulates with the mandible. Neurocranium: cranial base ethmoid: forms the floor of the anterior cranial fossa, cribiform plate. Sieve like form holes for the . Olfactory nerves pierce through the plate into the nasal cavity. Vulnerable area only place where nerves are exposed to the external environment. Root where meningitis can enter the brain: crista galli. Where the pitutary sits: pitutary fossa/hypophyseal fossa depression between the anterior and posterior clinoid process, anterior clinoid process + posterior clinoid process bed spikes, important for attachment of membranes of the brain.
