12/9/2023 0 Comments Number of nerve endings in feetWhat's Going On? Where nerve endings are closely spaced, many work together to receive stimuli from the pencil points, and the brain has no trouble processing and interpreting the signals. Most people will find it very easy to detect two points on the fingertips or lips but progressively harder as you move away from these sensitive zones. Test other parts of the body, including fingertips. Ask the person how many points he or she feels. Be sure to touch with both points at the same time when using the double pencil. Ask the other person to look away while you touch his or her arm gently with either one or both of the pencil points. Align two pencils so the points are even and tape them side by side. Here's How MATERIALS - Three sharpened pencils - Tape - Another person METHODS 1. You can test differences in the density of nerve endings over the body. They are most widely spaced on parts of the back. Nerve tips are closest where the sense of touch is critical for survival - fingertips, for example - and other areas such as lips. The number of nerve endings in each square inch varies from place to place on the body. On the other hand, if the needle happens to hit a nerve ending, the pain can be sharp. Nerve endings on your upper arm are far enough apart that a needle may slip between them, triggering no reaction. This is the tip of a long, filamentous nerve cell that links the skin to the spinal cord deep inside the body. The reason is that we feel things only when the stimulus makes contact with a nerve ending. Ever noticed that sometimes when you're getting an injection with a needle, it hurts a lot and at other times, you don't even notice the needle piercing your skin? Many people have.
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