Upload-P431-Chapter 3 - Chapter 3 Neuroanatomy Chapter...

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Unformatted text preview: Chapter 3: Neuroanatomy Chapter Nomenclature II. Anatomical subdivisions of the brain III. Brain structures I. I. Nomenclature I. Neuraxis: an imaginary line drawn through the Neuraxis: spinal cord up to the front of the brain. spinal Dorsal: toward the top of the head and back. Ventral: toward the ground and stomach. Medial: toward the midline. Lateral: toward the side. Anterior (rostral): toward the front end. Posterior (caudal): toward the tail. Superior: above or dorsal to. Inferior: below or ventral to. Unilateral: on one side of the midline. Bilateral: on both sides of the midline. Ipsilateral: on the same side. Contralateral: on the opposite side. Three ways to slice the NS 1. Coronal (cross, frontal) section, transversely. 1. Sagittal section: perpendicular to the ground Sagittal and parallel to the neuraxis. and 1. Horizontal section: parallel to the ground. Gray matter: collections of cell bodies. White matter: collections of axons covered White with myelin sheath with Nucleus (ganglion): a large number of cell Nucleus bodies grouped together. bodies Tract (nerve): a large number of axons Tract grouped together II. II. Anatomical subdivision of the brain Major Major Division Division Hindbrain Hindbrain (Rhombencephalon) (Rhombencephalon) Principal Principal Structure Structure Telencephalon Cerebral cortex Basal ganglia Limbic system Third Diencephalon Thalamus Epithalamus Hypothalamus Pineal body Cerebral aqueduct Mesencephalon Tectum Tegmentum Metencephalon Midbrain (Mesencephalon) Subdivision Lateral Forebrain Forebrain (Prosencephalon) (Prosencephalon) Ventricle Cerebellum Pons Myelencephalon Medulla oblongata Fourth III. Brain structures III. 12 pairs of cranial nerves I. Olfactory: olfaction. Optic: vision. Oculomotor: eye muscles. Trochlear: eye muscles Trigeminal: sensory and motor to face Abducens: eye muscles II. III. IV. V. VI. Facial: sensory and motor to face II. Auditory (Vestibulocochlear): audtion, Auditory equilibrium equilibrium III. Glossopharyngeal: sensory and motor to Glossopharyngeal: throat and tongue throat IV. Vagus: sensory and motor to viscera V. Spinal accessory: neck muscles VI. Hypoglossal: motor to tongue I. I. A A D E C B B C L K DE M I F FG A BC D EF G H J I K J A B D F G K J I E H H C ...
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This note was uploaded on 05/25/2011 for the course PSYCHOLOGY 492 taught by Professor Xu during the Fall '10 term at Grand Valley State.

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