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Did you know that a baby has up to 100 more bones than an adult? Yes! So is! Adults have 206 bones while a newborn has almost 300.
But do you know why this happens? Well there is a simple explanation. On our site we explain the curious phenomenon of why babies have more bones than adults.
Babies have more bones just to be able to reach the world through the birth canal. Having to go through such a narrow place, only ten centimeters, many of your bones are divided into parts and are softer and more flexible. Later, with growth and development, those bones will gradually weld and fuse.
You must have noticed the head of a newborn. Top has a slight sag that sometimes beats. It's about the fontanelle. The small skull of a baby is made up of several bones joined together by cartilaginous, elastic and fibrous tissues that can be overlapped, making it easier for the head to fit through the birth canal without damaging the brain. These skull bones will not be ossified until the age of six.
- As in the skull, the hips of babies are also divided into three or four sacral vertebrae that will later join in the sacrum.
- The coccyx in a newborn is formed by 3 to 5 coccygeal vertebrae and the coccyx is formed from the union of the ilium, ischium and pubis.
- The infantile sacrum is not welded either and is formed by four independent vertebrae.
- The baby also has the humerus divided into three parts.
- Likewise, the maxilla is divided into two, the upper and lower jaw.
All of these bones are actually growth plates that bond, calcify, and weld together until age 20 or 25, when the skeleton reaches approximately 12% of the body's weight.
And how does this process happen? Long bones, for example, grow in length at the ends in regions called growth plates.
Growth occurs when cartilage cells divide and increase in number on these growth plates. These new cartilage cells push the larger cartilage cells toward the center of the bone. These older cartilage cells die and the space they occupied is replaced by bone. When a bone has reached its full size, its growth plates turn into bone.
Long bone growth ends at the end of puberty. When the growth of long bones stops, they usually no longer grow any more.
In this course in which the cartilage thickens and turns into bone mass, there is a predictive medical test that helps doctors estimate the maturity of the child's skeleton. This is the wrist test, which consists of an x-ray of the epiphyseal cartilage that calculates bone age, which does not have to coincide with chronological age and which can help diagnose any growth problems.
Knowing the bone age and height of the child, we can guess the final size of the child. It is curious to know as a prognosis how our children will grow. And it is that everything is written in the bones.
You can read more articles similar to Why Babies Have More Bones Than Adults, in the Babies category on site.