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Biolog 35 - Chapter 35 Sensory Perception I Sensory...

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Chapter 35: Sensory Perception I. Sensory Pathways A. Cell communication pathways from sensory neurons and certain brain regions. B. Reception of stimulus transduction of energy brain response to sensation C. Stimulus is a form of energy that actives receptor endings of sensory neuron. D. Perception is an understanding of what a sensation means E. Mechanoreceptors detect forms of mechanical energy. F. Pain receptors detect damage to tissues G. Thermoreceptors are sensitive to heat or cold H. Chemoreceptors detect chemical energy of substances in the fluid bathing them I. Photoreceptors detect differences in the energy of visible light II. Somatic Sensations A. Somatic sensations are responses to receptors near the body surface, in skeletal muscles, and in walls of internal organs. B. Free nerve endings are unmyelinated branched endings of sensory neurons in skin and internal tissues of encapsulated receptors.
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