How many bones are there in the human body?
Question: How many bones are there in the human body?
This is a common question that many people ask out of curiosity or for educational purposes. The answer is not as simple as it may seem, because the number of bones in the human body can vary depending on several factors, such as age, development, and anatomical variations.
According to most sources, the average adult human skeleton consists of **206 bones** . However, this number can change slightly from person to person due to factors like bone fusion during growth, which reduces the number of bones from about 270 at birth to 206 in adulthood. Some people may also have extra bones, such as cervical ribs or sutural bones, or fewer bones, such as due to congenital conditions or injuries.
The 206 bones of the human body can be divided into two main groups: the axial skeleton and the appendicular skeleton. The axial skeleton includes 80 bones that form the central axis of the body, such as the skull, spine, and chest. The appendicular skeleton includes 126 bones that form the limbs and the girdles that attach them to the axial skeleton, such as the arms, legs, shoulders, and hips.
The following table summarizes the names and numbers of the 206 bones in the human body:
| Region | Bones | Number |
| --- | --- | --- |
| Axial skeleton | Skull | 22 |
| | Ear ossicles | 6 |
| | Hyoid bone | 1 |
| | Vertebral column | 26 |
| | Thoracic cage | 25 |
| **Subtotal** | **Axial skeleton** | **80** |
| Appendicular skeleton | Pectoral girdle | 4 |
| | Upper limbs | 60 |
| | Pelvic girdle | 2 |
| | Lower limbs | 60 |
| **Subtotal** | **Appendicular skeleton** | **126** |
| **Total** | **Human skeleton** | **206** |
Source: [List of bones of the human skeleton - Wikipedia](https://en.wikipedia.org/wiki/List_of_bones_of_the_human_skeleton)
This table is based on the most common classification of the human bones, but there may be some variations in different sources or individuals. For example, some sources may count the sternum as one bone or three bones (manubrium, body, and xiphoid process), or some individuals may have fused or separated sacral or coccygeal vertebrae.
The number of bones in the human body is not fixed or constant, but rather dynamic and variable. It depends on how we define and count bones, as well as on our individual characteristics and life stages. Therefore, the answer to this question may not be definitive or universal, but rather approximate and relative.
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