A&P Ch-13 - Oct-6-2015 Ch-13 Spinal Cord and Reflexes Bio-2870 Anatomy and Physiology Chapter 13 The Spinal Cord Nerves and Reflexes A P Fall-2015 1

A&P Ch-13 - Oct-6-2015 Ch-13 Spinal Cord and Reflexes...

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Ch-13 Spinal Cord and Reflexes Oct-6-2015 A & P Fall-2015 Bio-2870 Anatomy and Physiology Chapter 13 The Spinal Cord, Nerves and Reflexes 1
Ch-13 Spinal Cord and Reflexes Oct-6-2015 A & P Fall-2015 2 Review these definitions 1) Neuron and Neuroglia 2)Cell body and axon 3)Synapse 4)Ganglion/ ganglia 5)Myelinated / unmyelinated axons 6)Gray mater / white matter 7)Fibers/ nerves 8)Pre and post ganglionic fibers
Ch-13 Spinal Cord and Reflexes Oct-6-2015 A & P Fall-2015 An Introduction Figure 13 1 An Overview of Chapters 13 and 14. 3
Ch-13 Spinal Cord and Reflexes Oct-6-2015 A & P Fall-2015 4 Sensory Information Figure 15 1 An Overview of Neural Integration. Afferent Division of the Nervous System Receptors Sensory neurons Sensory pathways Efferent Division of the Nervous System Nuclei Motor tracts Motor neurons
Ch-13 Spinal Cord and Reflexes Oct-6-2015 A & P Fall-2015 Gray Matter and White Matter Sectional Anatomy of the Spinal Cord White matter Is superficial Contains myelinated and unmyelinated axons Gray matter Surrounds central canal of spinal cord Contains neuron cell bodies, neuroglia, unmyelinated axons Has projections ( gray horns ) 5
Ch-13 Spinal Cord and Reflexes Oct-6-2015 A & P Fall-2015 6 Fig 13-2 Gross Anatomy of Adult Spinal Cord
Ch-13 Spinal Cord and Reflexes Oct-6-2015 A & P Fall-2015 Gray Matter and White Matter Figure 13 5a The Sectional Organization of the Spinal Cord. 7
Ch-13 Spinal Cord and Reflexes Oct-6-2015 A & P Fall-2015 8 Fig 13-7 Peripheral distribution of spinal nerves
Ch-13 Spinal Cord and Reflexes Oct-6-2015 A & P Fall-2015 9 Fig 13-7 Peripheral distribution of spinal nerves
Ch-13 Spinal Cord and Reflexes Oct-6-2015 A & P Fall-2015 Neuronal Pools Functional Organization of Neurons Sensory neurons About 10 million Deliver information to CNS Motor neurons About 1/2 million Deliver commands to peripheral effectors Interneurons About 20 billion Interpret, plan, and coordinate signals in and out 10
Ch-13 Spinal Cord and Reflexes Oct-6-2015 A & P Fall-2015 Neuronal Pools Five Patterns of Neural Circuits in Neuronal Pools Divergence Spreads stimulation to many neurons or neuronal pools in CNS Convergence Brings input from many sources to single neuron Serial processing

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