When it comes to holes in the human body, nose, ear, mouth, navel and anus may come to mind first. After all, there is no doubt about what we see when we look in the mirror.
But now you are about to witness that the holes your body has are not limited to these.
In fact, the answer to this question differs depending on how a hole is defined.
If we think of a hole as a random opening on a surface, there are many holes in the human body. For example; The mouth, nose, ears, eyes and genitals are the openings of the body.
But on the other hand, it is also possible to define a hole as a topological hole. A topological hole is an opening that cannot be filled by the extensibility or bending of the surface of the hole.
To put it in a more understandable form, let’s imagine that an infinitely long unbreakable rod is placed in the hole. If the rod can pass through the opening and exit from the other side; This is not a topological hole. But if the rod gets blocked somewhere, this becomes a topological hole.
For example, if we put a long stick into our mouth, this stick comes out from the anus.
This shows that the human body is not a topological hole. It is possible to classify holes as blind holes as well as open and topological categories. At this point, pores, sweat glands and hair follicles are included in the blind holes class.
In addition, it is not possible to give an exact number of pores, sweat glands and hair follicles in the human body. In particular, the density of hair follicles varies greatly depending on each person’s physical structure.
However, researcher Adolph Schultz, who closely examines the nature of hair density and distribution, says that there are approximately 301-312 hair follicles in a human being.
Again, when the German anatomist Karl Friedrich Theodor turned his microscope to the human body, he reached some conclusions, although not definitive, about how many sweat glands there were.
According to the anatomist, there are approximately 300 sweat glands per square centimeter on the sole of the foot, for example. There are also different researchers who concluded that this number is on average 600. At this point, it is possible to clearly say that there are many contradictions when it comes to the human body.
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