BIOB32H3 Lecture Notes - Medial Lemniscus, Carotid Body, Nociceptor
28 Mar 2013
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Document Summary
Neural integration : sensory pathways and the somatic nervous system. An overview of sensory pathways and the somatic nervous system. Sensory receptor: specialized cell or cell process that monitors specific conditions, arriving information is a sensation, awareness of a sensation is a perception. Senses: general senses, pain, temperature, physical distortion, chemical detection, receptors for general senses scattered throughout the body, special senses, located in specific sense organs, structurally complex. Sensory receptors: each receptor cell monitors a specific receptive field, transduction, a large enough stimulus changes the receptor potential, reaching generator potential. Receptors: tonic receptors, always active, slow acting receptors, phasic receptors, provide information about the intensity and rate of change of a stimulus, fast acting receptors, adaptation, reduction in sensitivity in the presence of a constant stimulus. Thermoceptors and mechaniceptors: found in the dermis, mechaniceptors, sensitive to distortion of their membrane, tactile receptors (six types, baroreceptors, proprioceptors (three groups) Neural integration i: sensory pathways and the somatic nervous system.
