One of our most important advantages that distinguishes us from other living things and makes us more advantageous is the existence of our hands, especially our fingers. Even though we are not very aware of it in our daily life, it would be very difficult or even impossible to do most things without our fingers. It is quite surprising that an area that is so important and functional for our body is also very sensitive.
This happens when something touches the skin under your nail, if you accidentally cut off a nail or accidentally damaged it. unique pain It means you have experienced.
The real question is, why do some parts of our body differ from other parts of the body? much more sensitive?
First, let’s take a closer look at the anatomy of the fingers and the physiological factors involved in this part of the body.
our hands, motor skills practice and development quite skilled at it. For example, we do not think about how we can do all these things while holding a pen and writing, picking up a glass and putting it there, or trying to pull an object. Because our hands and fingers allow them.
We perform these skills with 3 main nerves and 27 different bones that control our muscles.
In our hands, median, ulnar and radial 3 basic nerves exists. We can think of these nerves as a main pathway with thousands of branches and smaller sections of these branches.
Our fingertips are the region with the highest nerve ending density compared to all other parts of our body.
In addition to having an average of 2,500 per square centimeter of this nerve ending density, some of these nerve receptors our sensitivity increases quite a lot.
Nails are another structure that increases the functionality of our hands as well as our fingertips.
Nails are actually a flattened shape that most mammals have. claw can be expressed as Claws, which fulfill the defense and basic needs of mammals, have changed over time and their changing needs. through evolutionary changes turned into nails.
Fingernails, like claws, consist of a hard layer of keratin.
However, unlike the claws that animals have, when they are dislodged or damaged, they are completely covered under unprotected nerve endings arises.
So, while our nails have a very hard structure, why is the area under the nail so sensitive?
Nerve endings are concentrated in certain parts of our body to increase sensitivity and functionality, just like our fingertips. Therefore junction of dense nerve endings and hard protective material inevitably sensitive.
The nerves under our nails are rarely exposed to the external environment. The skin under the nails is covered with nails for 99% of its existence, protected from external factors passes.
Since our under-cut skin does not receive the stimuli of the outside world, such as our nail tips, it is protected against any external factor. is unprepared and in case of contact with shocking pain is faced.
C-fibers cause our sense of touch in our fingertips to gain sensitivity.
We perceive and feel the texture or heat of an object we touch thanks to these fibers, but our under-nail tissues layers of defense doesn’t have any. Because nails already serve this task.