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Unformatted text preview: elium. J. Cavernous K. Superior Sagittal Blood-Brain Barrier Blood Barrier formed by astrocytes and endothelial lining of brain capillaries brain capillary Prevents cellular wastes from entering brain tissue tissue astrocyte Disorders of the Meninges Meningitis Meningitis Inflammation of the meninges caused by a viral or bacterial infection infection May spread to nervous tissue of CNS CNS Encephalitis Encephalitis Brain tissue inflammation inflammation Fatal 50% of the time Fatal •Pneumococcal Meningitis Disorders of the Meninges Meninges Hydrocephalus Hydrocephalus Build up of CSF due to blockage or obstruction blockage Exerts pressure on the brain brain Can cause permanent brain damage brain Spinal Cord Spinal Function Function Controls reflex activities Controls Transmits info. from peripheral nerves to brain and back brain Structure Structure Runs from the foramen magnum to L1 or L2 magnum Cervical and lumbar enlargements enlargements 31 pair of spinal nerves emerge from the cord emerge Spinal Cord Structure Spinal Filum Terminale Filum Extension of pia mater attaching the cord to the coccyx coccyx Conus Medullaris Conus Caudal end of spinal cord cord Cauda Equina Cauda Nerves from the lower cord running inferior before exiting the vertebrae vertebrae conus medullaris conus filum terminale cauda equina The Cerebrum: Regions The Sits in anterior and middle cranial fossa fossa Six lobes Six Frontal (1) (1) Parietal (2) (2) Occipital (3) (3) Temporal (4) (4) Limbic (5) (5) Insula (6) (6) Many functions in various regions regions 2 1 5 3 4 6 The Cerebrum: Gyri and Sulci The longitudinal fissure Gyri (gyrus) (gyrus) Folds or hills in the cerebral tissue cerebral Sulci (sulcus) Sulci central central sulcus sulcus Shallow grooves or valleys Fissures Fissures Deeper grooves and valleys and precentral precentral gyrus gyrus The Cerebrum: Gyri The Gyri Gyri 1 Precentral gyrus (1) (1) Postcentral gyrus (2) (2) Superior temporal gyrus (3) (3) Cingulate gyrus (4) (4) 4 3 2 The Cerebrum: Sulci The 1 Sulci Sulci Central sulcus (1) (1) Lateral (Sylvian) sulcus or fissure (2) (2) Parieto-occipital Parieto occipital sulcus (3) (3) Calcarine sulcus (4) (4) 2 3 4 The Cerebrum: Fissures The 1 Fissures Fissures Longitudinal fissure (1) (1) Transverse fissure (2) (2) 2 The Cerebrum: White matter The White matter = myelinated axons myelinated Three types of fibers in cerebral white matter: cerebral Association fibers Association Travel to other areas in the same hemisp...
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This note was uploaded on 12/08/2011 for the course AMY 2A taught by Professor Jamesivey during the Spring '06 term at Riverside Community College.

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