17 Which of the following is correct regarding sensory adaptation? Select one: Occurs when a stimulus is gradually decreased Results in increased sensitivity of sensory receptors to a stimulus and an increase in nerve impulse frequency in the first order neuron Results in reduced sensitivity of sensory receptors to a stimulus and a reduction in nerve impulse frequency in the first order neuron Pain is an example of rapid adaptation, which has a protective role
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Option A states that sensory adaptation occurs when a stimulus is gradually decreased. This is not entirely accurate, as sensory adaptation can occur even if the stimulus remains constant. Option B states that sensory adaptation results in increased Show more…
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Sensory adaptation occurs in all receptors. Sensory adaptation occurs when receptors adapt to constant stimuli and stop firing. Sensory adaptation does not occur in all receptors. Sensory adaptation occurs when receptors fire more rapidly with constant stimuli. Pain (nociception) receptors are a good example of sensory adaptation. Proprioception is an example of sensory adaptation. Thermoreceptors are examples of sensory adaptation.
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Which statement about sensory systems is FALSE? In general, a stimulus causes a change in the flow of ions across the plasma membrane of a sensory receptor cell. Sensory transduction involves the conversion (direct or indirect) of a physical or chemical stimulus into changes in membrane potentials. Sensory adaptation plays a role in the ability of organisms to discriminate between important and unimportant information. The more intense a stimulus, the greater the amplitude of each action potential fired by a sensory neuron
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