Study Guide Exam III Study Sheet 5

Study Guide Exam - 1 What is the law of specific nerve energies Be able to name the five types of receptors Each receptor that you have in your

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1. What is the law of specific nerve energies? Be able to name the five types of receptors. Each receptor that you have in your body was designed to transmit one type of sensation. It monitors 1 thing: 1. Mechanoreceptors a. Receptor undergoes mechanical distortion. b. Ex.) Pressure, Force, etc. 2. Thermoreceptors a. Cold receptors b. Warm receptors 3. Nociceptors (Pain) a. Free nerve ending b. Ex.) Exposed nerve in tooth from cavity. 4. Electromagnetic receptors a. Vision i. ii. Cones (Color) 5. Chemoreceptors a. Taste i. Taste buds b. Smell i. Receptors in the olfactory c. Arteriol O 2 i. d. Osmolarity e. Blood O 2 f. Blood glucose 2. What is meant by receptor adaptation? What is a tonic receptor? What is a rate receptor or phasic receptor? Be able to give examples of each. Receptor Adaption - A property of every receptor. - If we keep the same stimulus strength can the firing continue at the same frequency. --Tonic - Keep same firing rate. - Little or no change - - Phasic - Same as rate receptors - Strength of firing drops rapidly Slow Fast Tonic Phasic/Rate Nuclear Chain Nuclear Bag
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3. Describe the two different pathways for somatic sensation. What fiber types are associated with each? Which has the faster speed of transmission? Which differentiates the intensity of the stimulus the best? Dorsal columns
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This note was uploaded on 04/17/2008 for the course PXW 499 taught by Professor Ronaldbrinkert during the Spring '08 term at North Dakota.

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Study Guide Exam - 1 What is the law of specific nerve energies Be able to name the five types of receptors Each receptor that you have in your

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