A. When a hair on your head is moved, the hair follicle touch receptors are stim

Question

A. When a hair on your head is moved, the hair follicle touch receptors are stimulated . If a person put his or her hair in a ponytail, what would be the result if there was no adaptation to these touch receptors?

B. Leprosy often results in loss of pain to infected body areas. Describe the hazards of this

C. Compare the size of the somatosensory cortex representing the fingertips for a visually impaired person who reads Braille(increased tactile sensitivity) to that of someone with normal vision who has normal tactile sensitivity.

Explanation / Answer

A. In this case, if there was no adaptation, then there would be continuous impulses and results in awareness of bending hairs from touch receptors. As a result, they would not feel the hair as it has put up in a ponytail.

B. In leprosy, the bacteria attack nerve endings and may destroy the body's ability to feel pain. It may also lead to loss of sensation to fingers and toes and thereby increases the risk of injury. Inadequate care for leprosy causes infection of open wounds.

C. The stimulation of Braille reading finger tips of blind people produce larger amplitude of somatosensory rised potentials across larger cortical area when compared to normal vision people. In this case , we can take example of monkeys who have been trained to use their 2nd and 3rd finger tips often has larger cortical representation when compared to untrained monkeys.

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