When a baby has 300 bones at birth, why are there only 206 in adulthood?
The number of human bones is the same, both are 206 fast. This is regardless of race and gender, but do you know? Babies have more than 300 bones at birth, but only 206 in adulthood? Why is that? Where did the missing ones go?
Human bones do not disappear out of thin air. Unless a lesion is removed, basically a fixed number is maintained. 206 is the number of bones recognized by experts, while 300 is the number of bones during infancy. If the entire human body is 300 bones in infancy and 206 in adulthood, it means that this is normal, and it is not a disease response, as long as you understand what is going on. Infancy is the beginning of human development. Human organs and bones are in the developmental stage, that is, the growth stage. Therefore, as people get older, bones also develop and grow. Then, the cause of bone loss must be related to the cause of growth. Previously, the bones separated into two or three bones were merged into one because of developmental development. This can accept the reason for the baby’s adult bones to decrease.
Human bone development and healing is a very slow process. It takes more than ten years from birth, and it usually takes about 16 years to develop into a whole. So why are there a few more bones during infancy? That’s because during infancy, 5 sacral vertebrae will gradually heal into 1 sacrum, and 3-4 tail vertebrae will grow into 1 coccyx. In addition, the 2 hip bones in adults are composed of 2 A total of six bones consist of a sacrum, two ischiums and two pubic bones. This is why the number of bones is high in infancy, and the number of bones is reduced in adulthood.
Between the baby’s bones, there is a piece of collagen cartilage. This is the joint between the baby’s bones. It is precisely because it is collagen cartilage. As the age increases, the collagen cartilage eventually degenerates and melts, and it becomes With dense seams, some will become joint cavities, and some will become hard bones. As a person turns from an infant to an adult, the bones slowly form and harden, and the epiphysis becomes hard bones and becomes one with the radius.
During the baby’s growth, some bones will fuse, which indicates that bone development has a very important role in healthy growth. If bone development is ignored, it will cause some adverse effects, and even people do n’t look good. There is a close relationship. Therefore, as a parent, pay attention to the development of the baby, especially not to allow the bones to be damaged during development. Otherwise, I regret it.