2 Brain Organization and Nervous system

2 Brain Organization and Nervous system - How Does the...

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Unformatted text preview: How Does the Nervous System How Does the Nervous System Function? Function? Lecture Overview Lecture Overview Overview of Brain Function and Structure Overview of Brain Function and Structure Neuroanatomy & Functional Organization Neuroanatomy & Functional Organization of the Nervous System of the Nervous System Principles of Nervous System Function Principles of Nervous System Function Terminology Terminology Neuraxis: imaginary line drawn through the Neuraxis: imaginary line drawn through the spinal cord up to the front of the brain spinal cord up to the front of the brain Anatomical directions are understood relative Anatomical directions are understood relative to the neuraxis to the neuraxis Anterior- toward the head Anterior- toward the head Posterior- toward the tail Posterior- toward the tail Dorsal toward the back Dorsal toward the back Ventral- toward the belly Ventral- toward the belly More anatomical locations Superior- located above Inferior- located below Lateral- toward the side Medial- toward the middle Rostral- toward the beak; toward the front Caudal- toward the tail Summary Summary The brains surface features The brains surface features Lateral View Internal organization Internal organization Medial View Location in brain: Location in brain: Medial Medial Lateral Lateral The surface features of the brain The Meninges The Meninges A series of membranes that protect the A series of membranes that protect the brain and spinal cord brain and spinal cord The Meninges Dura mater- Latin for hard mother thick, tough outer layer of tissue Arachnoid- Greek like a spiders web middle layer, thin sheet of delicate connective tissue Overlies the subarachnoid space (CSF) and acts like a cushion Pia mater- Latin soft/tender mother inner layer clings to the brains surface Overlies contours of brain; its capillaries nourish the brain Cerebrospinal fluid (CSF) Cerebrospinal fluid (CSF) Fluid that cushions brain and spinal cord in subarachnoid space btw arachnoid layer and pia mater Made of NaCl and Made of NaCl and other salts other salts Meningitis- Inflammation and or infection of the meninges and CSF due to virus or bacteria Life threatening b/c of proximity to brain/spinal cord Cerebrum Hemispheres The uppermost portion of the brain 2 symmetrical halves of brain: Control opposite side of body Left brain controls right body Right brain controls left body Rostral Caudal Ipsilateral : same side of brain Contralateral : opposite side of brain Cerebrum...
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This note was uploaded on 11/18/2010 for the course PSYCH 2275 taught by Professor Weiner,j. during the Spring '10 term at CUNY Hunter.

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2 Brain Organization and Nervous system - How Does the...

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