10 strange and unexpected facts about the human body organs
Although the Millennium study, the human body - is still an inexhaustible storehouse of puzzles.
We invite the reader on an exciting journey through his own body.
Usually, the average person has 12 ribs on each side, but some people have found an additional edge, which, incidentally, can cause health problems.
This edge is called the neck, and meets at 0, 05-3 per cent of people, studies have shown. It grows from the base of the neck just above the clavicles, and sometimes not formed completely, and consists of only a thin strip of fiber fabric.
Additional rib may cause health problems if it presses against the nearby blood vessels or nerves. This leads to a condition known as thoracic outlet syndrome, which is characterized by pain in the shoulder or neck, feeling the loss of a limb and the presence of clots in the blood.
The hyoid bone
The hyoid bone is the only bone in the body, which is not connected with any other bone; it is the basis of the ability to speak, and is found only in humans.
This horseshoe-shaped bone located in the throat between the chin and the thyroid cartilage. Due to its location, the bone works together with the larynx and tongue to utter a series of sounds.
podnosovoy groove, also sometimes called a filter is a vertical "notch" of the middle portion of the upper lip.
In some animals due to him, perhaps, improved sense of smell, as the area around the nose remained damp, but people have this part of the body does not have a specific function. It is likely, it happened because modern people rely more on vision than any other feeling. VALLEY lost functionality, and remained only as a relic of evolution.
The coccyx or hvostets formed at the junction of the vertebrae, and the tail is the residue that is present in other mammals.
It has been suggested that the coccyx helps secure small muscles and support the pelvic organs. Nevertheless, there have been many medical cases where the tailbone was surgically removed without any adverse effects.
Some medical cases describe babies who are born with an elongated coccyx. Today, on this unusual "tail" can be easy to get rid surgically, but in the Middle Ages it was believed that such a sign indicates a relationship with the devil, and such cases the mother was executed together with the child.
Human bone system is full of wonders. Consider this: the adults have less bone than children. We are born with 350 bones, but because some of the bones fuse together over time, then, as adults, we are left with only 206 bones.
To some extent this is a philosophical question, but it can be argued that every three or four days we have a new stomach appears. This is because the inner surface of our stomach constantly produces new cells. In fact, the stomach is constantly creating new layers to be digested own acid.
There was something in the knee
In November 2013, Belgian researchers first described the ligament in the human knee; she was named the anterolateral bundle. French surgeon first proposed the existence of this link in 1879, but so far its existence has not been proven.
In another study, scientists have discovered a previously unknown layer in the human eye.
It is a thin, durable structure, was named after its discoverer called "Dua layer", whose thickness is only 15 micrometers, or one millionth of a meter, and is located behind the cornea.
The opening of this layer will help researchers better understand some of the eye diseases that can be caused by trauma or rupture of this layer.
muscle, allowing wiggle ears
Cats, dogs and some lucky-people can wiggle their ears, using muscle group called Auriculares. This group of muscles includes the front ear muscles that move the ear forward; top that lifts his back and pushes it back.
Although we all have those muscles, it is believed that only about 15 percent of people have the opportunity to use them, moving his ears.
Oddly enough, the different organs of the body - of all ages. One of the most rapidly aging tissues in the human body is the female breast tissue. She is an average of three years older than the other tissues.
But the heart tissue that is constantly updated with stem cells, several years younger than the rest of the body, and this you can proudly announce your next birthday.