Unit_5_Lecture_2 - Kinesiology 1223 Todays Lecture The...

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Kinesiology 1223 Today’s Lecture The Brain, Development and Structures, Membranes, CSF, Function and Circulation, Blood Brain Barrier, , Cerebral Hemispheres, Lobes and Functional Groups of Fibers, Motor and Sensory areas, Mapping of Motor and Sensory Cortexes, Association areas (p. 514-549) Be Prepared ! Read Topics Before Lecture! Next Lecture: Memory, Cerebral Hemispheres, Basal Nuclei, Diencephalon, Thalamus, Hypothalamus, Limbic System, Brain Stem, Reticular Formation, Sleep, Cerebellum (p. 514-543)
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Quiet Please Turn off cell phones, PDA’s and beepers
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The Brain General Structure Embryological development procedures 3 regions of enlargement of the neural tube
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General Structure (cont’d) Developed brain- Many structures and groups Forebrain Cerebral hemispheres Basal nuclei Diencephalon Thalamus Hypothalamus
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General Structures (cont’d) - Midbrain - Hindbrain Pons Medulla Oblongata Cerebellum - Brainstem Midbrain Hindbrain (except cerebellum)
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Meninges 3 layers of connective tissue Separated by spaces or potential spaces Protect brain and spinal cord
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Meninges Dura Mater : tough outer layer Sub-dural space: beneath dura Arachnoid Mater : thin, transparent middle layer Subarachnoid space: beneath arachnoid Cerebrospinal fluid (CSF) circulates Pia Mater : transparent inner layer Adheres to brain and cord Epidural space (above dura)- in cord only
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Meninges of Vertebra & Spinal Cord
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Cerebrospinal Fluid (CSF) Clear fluid Similar to blood plasma More Vitamin C More Na, Cl, and H ions than blood plasma Less protein and fewer Ca +2 and K +1 ions pH of CSF effects breathing and cerebral blood flow
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CSF (cont’d) Formed in choroid plexuses Specialized capillaries in the ventricle’s roof Surrounded by ependymal cells- 1 layer Fluid from blood stream is filtered as it moves through ependymal cells Enters ventricles as CSF
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This note was uploaded on 11/16/2010 for the course KINESIOLOG 1223 taught by Professor Rooney during the Spring '09 term at Temple.

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Unit_5_Lecture_2 - Kinesiology 1223 Todays Lecture The...

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