~BN02 Organization of NS

~BN02 Organization of NS - Motor ~ Coronal or frontal...

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Organization of the Nervous System Lesson 2
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The Central Nervous System CNS Brain Spinal cord ~
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Peripheral Nervous System Somatic Nervous System - SNS Autonomic Nervous System - ANS Sympathetic Division Parasympathetic Division Cranial Nerves - 12 Pair Spinal Nerves - 31 Pair ~
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Divisions of the Brain Different schemes Forebrain, midbrain, hindbrain 5 major subdivisions Forebrain 1. Telencephalon 2. Diencephalon ~
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Midbrain - 3. Mesencephalon Hindbrain 4. Metencephalon 5. Myelencephalon ~ Divisions of the Brain
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Dorsal Ventral  Anterior Posterior Rostral Caudal Inferior Superior Terminology In reference to the BRAIN
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Brainstem & spinal cord Ventral Dorsal Rostral Caudal Anterior Posterior Superior Inferior
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Neural Axis
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Terminology Medial - toward the midline Lateral - away from the midline Ipsilateral - same side Contralateral - opposite side Decussate - crossover ~
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Terminology Afferent - toward Sensory Efferent - away from
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Unformatted text preview: Motor ~ Coronal or frontal cross-section - salami Sagittal - side view hot-dog bun Horizontal top view ~ Planes Telencephalon Cortical areas Fiber systems Landmarks Fissures /Sulci Lobes Gyri ~ Superior surface Gyri The Meninges Tough connective tissue Dura mater - tough outer layer Arachnoid membrane Subarachnoid space Cerebrospinal Fluid (CSF) Pia mater - soft inner layer, next to brain ~ Dura mater Arachnoid membrane Subarachnoid space CSF Pia mater Brain The Meninges Ventricular System 4 interconnected ventricles chambers Cerebrospinal Fluid (CSF) manufactured in choroid plexus 125 ml, t 1/2 = 3 hrs Hydrocephalus blockage of CSF flow ~ Ventricular System L V L V 3 rd Lateral Ventricles Third Ventricle Fourth Ventricle Cerebral Aqueduct Central Canal 4 th...
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This note was uploaded on 12/24/2011 for the course STEP 1 taught by Professor Dr.aslam during the Fall '11 term at Montgomery College.

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~BN02 Organization of NS - Motor ~ Coronal or frontal...

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