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What is Sensation? Conscious and subconscious awareness of changes in the external or internal environment
What are the Components of sensation? Stimulation of the sensory receptor → transduction of the stimulus → generation of nerve impulses → integration of sensory input
What are the two Classification of Sensory Receptors? General senses Somatic- tactile, thermal, pain and proprioceptive sensations Visceral- provide information about conditions within internal organs Special senses Smell, taste, vision, hearing, and equilibrium or balance.
What are the Types of Sensory Receptors? Free nerve endings Pain and thermoreceptors Encapsulated nerve endings Pacinian corpuscles Separate cells Hair cells, photoreceptors and gustatory receptor cells
Generator potential: is produced by free nerve endings, encapsulated nerve endings, and olfactory receptors. When it reaches a threshold, it triggers one or more nerve impulses in the axon of a first-order sensory neuron.
Receptor potential: triggers the release of neurotransmitter → postsynaptic potential → action potential
Created by: bella91