Questions 9. Are the two-point distances on different areas of the skin the same
ID: 3523498 • Letter: Q
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Questions 9. Are the two-point distances on different areas of the skin the same? Why or why not do you think this is? If they are not the same, which area was the most sensitive and which area was the least sensitive? 10.Which skin areas do you think have more receptors, areas that have small two point 11Which brain area do you think is larger, one receiving information from skin with lots 12. What are the different types of tactile receptors in our skin and what sensation(s) 13. Which tactile receptor is most involved with 2-point discrimination? distances or large two-point distances? Why? of receptors or from skin with a few receptors? Why? does each detect?Explanation / Answer
9.NO,the two point distances on different aras of the skin are not same.the two point discrimination depends on how dense mechanoreceptors are in the area of the skin.Naturally the distance will be very small on finger tips and very wide on the back.so most sensitive area is finger tips and also tongue ,least sensitive is back.
10.The area which have small two point distances have more receptors than large two-point distances.Because the ability to ditinguish fine detail by touch ,is directly related to the amount of neural tissue devoted to the representation of the body part.
11.The brain which receives information from skin with lots of receptors think larger. as the area of more sensory neurons there is a larger area of brain devoted to receiving their signals
12. there are four known types of tactile receptors whose only function is to perceive indentations and vibrations of the skin. 1)Ruffini's corpuscles -sensation of stretch of skin and sustained pressure.
2)Merkel's discs- pressure(mechanical) deep touch
3)pacinian corpuscles- vibration
4) Meissner's corpuscles -superficial light touch
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