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00:00 The human body has 206 bones. But did you know that this number evolves over our life?
00:05 Yes, although the adult human body is made up of 206 bones, this is not the case of the baby at birth.
00:12 Indeed, during its first years, a baby has 350.
00:16 As it grows, up to about 20 years, some bones are welded to form only one and the same bone.
00:22 This is for example the case of the spine.
00:25 At birth, a baby has 5 vertebrae more than an adult.
00:29 They fuse with each other throughout childhood and adolescence until the human body reaches the end of growth.
00:35 And it is the same for the bones of the pelvis and skull, but from one adult to the other, the number of vertebrae can vary.
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