I2 - 2. enteroreceptors- respond to internal environment 3....

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Sensory Receptors and Special Senses I. General Terms A. sensation - awareness of external/internal conditions B. perception - conscious registration of conditions C. stimulus - change that can initiate nerve impulse D. receptor (sense organ) - converts stimulus to impulse E. transduction - changing stimulus signal into nerve signal F. generator potential - electrical impulse in receptor G. receptor potential - receptor releases neurotransmitter H. adaptation - decreased sensitivity with repeat stimuli a. rapidly adapting - pressure, touch, smell b. slowly adapting - pain, position, blood chemicals I. afterimage - sensation even after stimulus is gone J. modality - distinct property of each sensation II. General Classification of Receptors A. Location 1. exteroreceptors - respond to external environment
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Unformatted text preview: 2. enteroreceptors- respond to internal environment 3. proprioreceptors- respond to body position/motion B. Type of Stimulus Detected 1. mechanoreceptors- any mechanical deviation a. touch, pressure, vibration, proprioception etc. 2. thermoreceptors- changes in temperature 3. nocireceptors- pain; physical or chemical damage 4. photoreceptors- light; rods & cones of the eye 5. chemoreceptors- shapes of different molecules a. taste, smell, chemicals of blood C. Simplicity or Complexity of the Receptor Structure 1. simple receptors- associated with general senses a. touch, pressure, temperature, vibration, pain 2. complex receptors- associated with SPECIAL senses a. smell, taste, sight, hearing, equilibrium...
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This note was uploaded on 01/29/2012 for the course SCIE SYG2000 taught by Professor Bernhardt during the Fall '10 term at Broward College.

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