Scientists have named the reason why a finger-cut finger aches especially hard, despite minor damage.

According to scientists, the case in the skin nociceptors - primary neurons, which are activated only by a pain stimulus. Their concentration at the fingertips is much higher than the average values ??in the human body, as can be clearly seen by attaching the folded sheet to the fingers, legs, hands, back and to the face - the sensations will vary significantly.

"This is a protective mechanism. The fingertips are our way of knowing the world and doing small work, "says dermatologist Haley Goldbach of the University of Carolina.

Another reason the researchers called the paper itself. The edges of the leaf are not perfectly smooth and are capable of causing lacerations. In addition, the cuts from the paper are not deep enough to activate the body's natural defenses, such as blood clotting and scarring, so that the damaged nerve endings in the fingers remain open reporter-ua. com.

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