Lecture Oct-20-11 Chapter 15 updated

Lecture Oct-20-11 Chapter 15 updated - Oct-20-2011 Bio 2870...

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Unformatted text preview: Oct-20-2011 Bio 2870 A & P Ch-15 Neural Integration 1 Oct-20-2011 Bio 2870 A & P Ch-15 Neural Integration 1 1 Introduction to Anatomy and Physiology Chapter 15 Neural Integration 1: Sensory Pathways and the somatic Nervous System Oct-20-2011 Bio 2870 A & P Ch-15 Neural Integration 1 Oct-20-2011 Bio 2870 A & P Ch-15 Neural Integration 1 2 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 Oct-20-2011 Bio 2870 A & P Ch-15 Neural Integration 1 Oct-20-2011 Bio 2870 A & P Ch-15 Neural Integration 1 3 Sensory Information Sensory Receptors Specialized cells that monitor specific conditions in the body or external environment When stimulated, a receptor passes information to the CNS in the form of action potentials along the axon of a sensory neuron Sensory Pathways Deliver somatic and visceral sensory information to their final destinations inside the CNS using Nerves Nuclei Tracts Somatic Nervous System (SNS) Motor neurons and pathways that control skeletal muscles Oct-20-2011 Bio 2870 A & P Ch-15 Neural Integration 1 Oct-20-2011 Bio 2870 A & P Ch-15 Neural Integration 1 4 Sensory Receptors Sensation The arriving information from these senses Perception Conscious awareness of a sensation General Senses Describe our sensitivity to Temperature Pain Touch Pressure Vibration Proprioception Oct-20-2011 Bio 2870 A & P Ch-15 Neural Integration 1 Oct-20-2011 Bio 2870 A & P Ch-15 Neural Integration 1 5 Sensory Receptors The special senses are provided by special sensory receptors Special sensory receptors Are located in sense organs such as the eye or ear Are protected by surrounding tissues Special Senses Olfaction (smell) Vision (sight) Gustation (taste) Equilibrium (balance) Hearing Oct-20-2011 Bio 2870 A & P Ch-15 Neural Integration 1 Oct-20-2011 Bio 2870 A & P Ch-15 Neural Integration 1 6 Sensory Receptors Figure 15–2 Receptors and Receptive Fields The Detection of Stimuli Receptor sensitivity Each receptor has a characteristic sensitivity Receptive field Area is monitored by a single receptor cell The larger the receptive field, the more difficult it is to localize a stimulus Oct-20-2011 Bio 2870 A & P Ch-15 Neural Integration 1 Oct-20-2011 Bio 2870 A & P Ch-15 Neural Integration 1 7 Sensory Receptors The Interpretation of Sensory Information Arriving stimulus Takes many forms:...
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This note was uploaded on 12/14/2011 for the course BIO 2870 taught by Professor Spranger during the Spring '08 term at Wayne State University.

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Lecture Oct-20-11 Chapter 15 updated - Oct-20-2011 Bio 2870...

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