What is the best physiological explanation as to why a particular area has a low two-point threshold? A greater skin surface area always results in a lower two-point threshold because there is physically more room in which to house sensory receptors. With a low two-point threshold, there is a greater density of sensory receptors to allow for more precise location of the sensation by the somatosensory cortex. OA low threshold suggests a decreased sensation in that area, meaning a wide receptive field on that area of skin.

What is the best physiological explanation as to why a particular area has a low two-point threshold? A greater skin surface area always results in a lower two-point threshold because there is physically more room in which to house sensory receptors. With a low two-point threshold, there is a greater density of sensory receptors to allow for more precise location of the sensation by the somatosensory cortex. OA low threshold suggests a decreased sensation in that area, meaning a wide receptive field on that area of skin.

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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A lesion to the medial lemniscus results in what type of sensory loss? Ipsilateral TPV C1 down Contralateral TPV C1 down Ipsilateral loss of pain and temperature C1 down Ipsilateral loss of pain and temperature L1 down Contralateral TPV and CP proprioception at L1 A lesion to the left anterior corticospinal tract at T3 would result in which of the following loss? Ipsilateral unconscious proprioception from T3 down Contralateral unconscious proprioception from T3 down Ipsilateral unconscious proprioception at T3 Ipsilateral unconscious proprioception from L1 down Contralateral unconscious proprioception from L1 down A lesion of the dorsal root ganglion at L4 would result in which of the following? Ipsilateral loss of all sensation L4 down Ipsilateral loos of all sensation at L4 dermatome Contralateral loss of all sensation at L4 dermatome Contralateral loss of all sensation at L4 down Contralateral loss of touch, pressure, and vibration at L4 A lesion to the lateral…