Which part of the body is the most sensitive

Sensory nerves and motor nerves are distributed in normal skin, and their nerve endings and special receptors are widely distributed in the epidermis, dermis and subcutaneous tissue to sense various stimuli inside and outside the body, induce corresponding nerve reflexes, and maintain the health of the body. Therefore, the skin has six basic senses, namely touch, pain, cold, temperature, pressure and itching. Touch is one of the basic sensations of the skin. There are contact points scattered on the surface of the skin. The size of the contact points is different. Some of them can be as large as {{0}}.5mm in diameter, and their distribution is irregular. Generally, the abdomen is the most, followed by the head, and the calf and the back are the least. Therefore, the touch of the finger pulp is the most sensitive, while the calf and back are the most sluggish. Touching the pulp of the finger with the end of the thread has obvious tactile sensation, while touching the calf is completely insensitive. This is also the reason why people do not need to look at the cards when playing mahjong, and they can touch the cards they need to know whether they are the cards they need, but they use two blunt needles with a distance of 0.5cm to touch the skin on the back but mistakenly think that it is an object.

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