What is the HARDEST in the human body? Reply to dislocated bones
If asked which part of the body is the hardest, many people will immediately think of bones. There are also people who think in a trivia direction, thinking that the foot is the hardest because it is related to the phrase “hard foot, soft rock”. Some people say that the head is the hardest part. There is even an opinion that the new hair is the hardest part because “A hair is placed on an iron anvil. Using an extremely powerful compressor to press down, the hair is not damaged but also leaves marks on the iron anvil.” .
Human bones are harder than some types of steel. The hardest bone in the human body is the jawbone. Feet make up 1/4 of the bones in the human body. But in fact, this is not the hardest part of the body.
The answer to this question is: ENAMEL. The stiffness of this tissue is due to its high mineral content.
Each tooth structure consists of 3 main components: enamel, dentin, and pulp. Enamel is the outermost layer, which plays a protective role against plaque and tooth decay. This is the visible white part of the tooth and also the hardest part of the human body.
When enamel is damaged, this component can become discolored and make the affected tooth very sensitive. The shiny white enamel that covers the teeth is even stronger than bone. This resilient surface is 96% mineral, the highest percentage of any other tissue in the body, helping to keep enamel structure strong and resistant to damage.
Thanks to the strength of enamel, teeth are the component that actually lasts the longest. Thanks to that, scientists can study about ancient people, from 80,000 years ago. Although teeth are so hard, there are more than 300 types of bacteria that can attack teeth. Fortunately, with healthy oral hygiene habits and regular checkups, people can completely protect their teeth from bacteria and other substances that can weaken teeth and cause tooth decay.
at Blogtuan.info – Source: Afamily.vn – Read the original article here
