Know the knee joint and protect the knee joint July 15, 2022
Discover the beauty of the world through the eyes. July 14, 2022
What do we know about the brain? July 13, 2022
LIFE SIZE HUMAN HEART MODEL
How Many Bones Are There In The Human Body?
Bone is an important supporting tissue of our body and has a certain degree of protection for our body. Bones are the main part of our movement. Any sports activities we engage in are closely related to bones. Since children are in the main period of skeletal development, there are still certain physical differences between adolescents and adults. The number of bones is also different, so how many bones are there in a person?
There are 206 adult bones in total, which are divided into four parts: skull, trunk, upper limb and lower limb. But children have more bones than adults. Because: There are 5 sacrums in children, and they become 1 when they grow up. Children's coccyx has 4 to 5 pieces, and when they grow up, they also synthesize 1 piece. Children have 2 ilium, 2 ischium, and 2 pubic bones, which merge into 2 hip bones in adults. In this way, children have 11 to 12 more bones than adults, that is, 217 to 218 bones. Medical books say that a newborn baby has as many as 305 bones.
However, some bones regenerate "auxiliary" or "daughter bones". For example, some people have each hand and wrist
The part has "auxiliary bones" or "sub-bones".
For example, some people have 24 "auxiliary" and "subbones" in each hand and wrist, and 26 in each foot.
Occasionally, additional small bones grow in the knees, elbows, and spine of the body, but the amount of additional bones grown varies from person to person. If "melted bones" or "sub-bones" are counted, there are far more than 206 bones in adults. But since these "extra bones" don't mean much, we just need to know that adults have 206 bones.
The longest bone in the human body is the femur, or thigh bone, which usually accounts for about 27% of the body's height, and the longest leg bone on record is 75.9 cm. The stapes in the ear is the smallest bone in the human body. It is only 0.25 to 0.43 cm long. The weight of the adult bone is about 1/5 of the body weight, and the weight of the newborn baby's bone is only about 1/7 of the body weight.
Bones Many bones eventually heal together. Such as the skull, and tailbone. An adult's coccyx is only one piece, but a newborn can still have 24 pieces. In addition, because the halogen gates were not merged, the entire skull was counted as a dozen pieces, and although the adult skull was counted as a few pieces, the number had been reduced a lot.
In addition, the bones of the newborn are all in the form of cartilage, and some of them do not ossify later, but maintain the state of cartilage. In this way, these bones disappear automatically. In addition, in order to protect the newborn, some parts of the human body grow a few more bones, and these bones are gradually absorbed later.
The above is a detailed answer to how many pieces of human bones are in our daily life. Bone injuries due to accidents also occur from time to time. So for the sake of our own health, we should take good care of our bones. Don't let them get hurt accidentally, pay attention to the little details in life, and take active preventive measures.