Chapter 13 - Chapter 13 Overview Information highway...

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Chapter 13 Overview Information highway between brain and body Extends through vertebral canal from foramen magnum to L1 Each pair of spinal nerves receives sensory information and issues motor signals to muscles and glands Spinal cord is a component of the Central Nervous System while the spinal nerves are part of the Peripheral Nervous System Functions of Spinal Cord Conduction Locomotion central pattern generators are pools of neurons providing control of flexors and extensors (walking) Reflexes involuntary, stereotyped responses to stimuli (remove hand from hot stove) involves brain, spinal cord and peripheral nerves Anatomy of SC Cylinder of nerve tissue within the vertebral canal (thick as a finger) vertebral column grows faster so in an adult the spinal cord only extends to _____ ___ pairs of spinal nerves arise from cervical, thoracic, lumbar and sacral regions of the cord each cord segment gives rise to a pair of spinal nerves Meninges Dura mater Arachnoid mater (creates subarachnoid space) Pia mater Medullary cone is tapered tip of spinal cord= _______________ is ___________ nerve roots resemble _____________
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Cross section Anatomy Central area of gray matter shaped like a butterfly and surrounded by white matter in 3
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This note was uploaded on 09/25/2011 for the course BSC 1085 taught by Professor Staff during the Fall '09 term at Broward College.

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Chapter 13 - Chapter 13 Overview Information highway...

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