7 Amazing Facts About The Human Skeleton

1. Your bones are constantly replaced

Right now, as you read this article, your bones are changing. Just to give you an idea, every 10 years, on average, the structure of every bone in your body is completely replaced. Isn't it amazing?

Because our bones are living tissue, they participate in a continuous process of dynamic remodeling, producing new bones and wearing out old ones.

Production of new bones and wear of old ones

2. Only one bone is isolated from others.

When we think of the human skeleton, it is common to imagine all interconnected bones forming a single set. However, there is a bone that is anatomically isolated from others: it is the hyoid bone. Located in the larynx, between cartilages, the hyoid bone is important not only for its physical structure, but also for its crucial role in human evolution: its development and its adaptation in association with the larynx enabled the great development of human speech. Thus, the hyoid bone, in partnership with the larynx, works in such a way that enables the articulation of complex sounds.

Hyoid bone

3. The strongest bone in the human body is in your head.

If someone asked you which is the strongest bone in your body, which one would you answer? The femur, maybe? None of this: the strongest bone is the jaw, also called the lower jaw. In addition to being the skull's only moving bone, it is able to maintain teeth, withstand high levels of stress and move repeatedly for a lifetime.

The strongest bone in your body

Surprisingly, the hardness of this bone is greater than that of all others in the human body, showing the evolution of the system according to its functions in our body.

4. The connection between bones and bloodstream

Do you know how blood cells produced in bones go to the circulatory system? Our bone marrow is filled with capillaries and blood vessels, causing cells to migrate through these cavities into our bloodstream.

5. Pregnancy and adaptation of the female body

In order for the female body to accommodate a baby throughout pregnancy, the skeleton needs to adapt. One of the means found was the loosening of the pelvis joints, which is activated through the hormone relaxin.

This hormone is produced in the human reproductive system and has a great effect on the cervix, smooth muscles, ligaments and joints.

Pelvis Evolution

But relaxin has a downside: Published in the Scandinavian Journal of Medicine and Health, a study of the action of this hormone on skeletal muscle tissue showed that the rates of anterior cruciate ligament injury in athletes increased fourfold when the concentrations of relaxins are high.

The research also found links between the occurrence of these injuries and the menstrual cycle, so that women can get hurt more in the ovulatory phase.

6. How smoking can ruin your bones

We don't even have to repeat all that talk about how smoking is harmful to your health, right? However, most people only link smoking to lung-related problems, but don't think about the harm that addiction does to bones, for example.

Research shows that smoking increases the risk of osteoporosis as bones end up being deprived of calcium, which causes malnutrition in the skeleton.

Normal bone with osteoporosis

In addition, the cigarette harms osteoblasts, which are the cells that form new bones. The situation worsens dramatically when a human smokes during childhood: the mass will be reduced considerably. If someone smokes after 30 years old will have the rate of bone loss doubled! According to the World Health Organization, one in eight cases of hip fracture is caused by smoking.

7. Skeleton influences sugar metabolism

Believe me, your skeleton is a fundamental part of the sugar metabolism process, also influencing how fats will break down in your body! Who made this important discovery was the researchers at Columbia University Medical Center.

Through the secretion of osteocalcin, a protein found in bone and dentin, our bones can regulate blood sugar levels and directly influence fat deposition. Thus, it was found that our skeleton has a strong influence on our weight gain or loss.

Your skeleton is directly linked to metabolism

Because osteocalcin increases insulin flow without decreasing insulin sensitivity, this function has a direct bearing on the problem of type 2 diabetes, which is a chronic condition that affects the way our body processes blood sugar. .

That is, if the doctor finds out that a person suffers from diabetes mellitus, it is very possible that their osteocalcin levels are low. According to Gerard Karsenty, president of the University of Columbia Department of Genetics and Development, "the discovery that our bones are responsible for regulating blood sugar completely changes our understanding of skeletal function and reveals a crucial aspect of energy metabolism." .

* Posted on 7/22/2016