Height is the length of the longitudinal part of the human body, which originates from the longitudinal growth of the human body and is greatly influenced by genetic factors. The height development of girls is earlier than that of boys, and the rapid growth period is from 12 to 13 years old, and the growth stops at 19-23 years old.
Boys' height develops late, growing rapidly at 15- 16 years old and stopping growing at 20-25 years old. The long bones and vertebrae of the limbs have ossified and their height has stopped growing.
The material basis of human height is bones. Height is mainly related to the long bones of the head, spine and lower limbs? The third part.
Experts remind that human physical development is a very complicated process, from top to bottom, from near to far. The head develops the earliest. The head length of a newborn is adult 1/2.
The head length of a newborn is 65438+ 0/4 of its own body length. In contrast, the development of lower limbs is late, and the newborn is only 1/4 of that of adults at birth. Therefore, the development of long bones of lower limbs after birth has the greatest influence on height.