309D S08 HW_4+A - NAME _KEY_ Homework #4 The Nervous System...

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NAME ____________ KEY ________ BIO 309D Homework #4 The Nervous System 1. Distinguish between the functions and structures of the central and peripheral nervous systems. Central: brain and spinal cord Receives and integrates sensory input; initiates motor output Peripheral: nerves and ganglia Communicates info between central nervous system and rest of body 2. Describe three ways that the components of the central nervous system are protected. 1. Bone: skull and vertebral column protect brain and spinal cord 2. Meninges: 3 layers of connective tissue that surround and protect brain and spinal cord 3. Cerebrospinal fluid: fluid between meninges and in CNS cavities (ventricles & central canal) that cushions and protects brain and spinal cord 4. Blood-brain barrier: cells in capillaries that feed CNS joined by tight junctions that prevent the passage of harmful substances (chemicals, infectious agents) from the blood into the fluid surround the brain and spinal cord 3. Fill in the following chart outlining the major regions of the brain. Region
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This homework help was uploaded on 04/20/2008 for the course BIO 309D taught by Professor Jessicawandelt during the Spring '08 term at University of Texas at Austin.

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309D S08 HW_4+A - NAME _KEY_ Homework #4 The Nervous System...

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