Define the “adequate stimulus” of a sensory receptor.
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Define the “adequate stimulus” of a sensory receptor.
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Sensory receptors: They are the dendrites of sensory neurons specialized to receive specific kinds of stimuli. Based on the type of stimuli they respond to, sensory receptors are classified as follows:-
- Mechanoreceptors- they sense and respond to physical force such as pressure, touch, and stretch.
- Photoreceptors- these sensory receptors respond to light.
- Thermoreceptors- respond to temperature changes in the body.
- Chemoreceptors are the ones that respond to dissolved chemicals, such as variations of O2, CO2, or H + in the blood.
- Nociceptors are the sensory receptors that are sensitive to a variety of stimuli associated with pain. The brain (thalamus and sensory center) interprets the pain
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