Question

what does the density of sensory receptirs reveal about the relative sensitivities of different location of skin?

Answer 1

The density of sensory receptors states that different parts of the body have different density of sensory receptors. Research works have found that there are many cutaneous receptors in the body out of which pain receptors are the ones which are seen in numerous amount as well as in density. Another point revealed was that the two-point threshold was found to be the smallest when there is more relative density of touch receptors giving more accurate tactile localization. Two parts of the body where the density of the receptor is found to be high are lips and fingertips. The areas of the body where the density of the receptor is found to be low were the Ventral forearm and back of the neck. Since, pain receptors are more in the skin and so is its density, they are non adaptive in nature as to respond to all type of stimuli everytime inorder to prevent tissue damage