The body currently has 206 bones, which connect to form the framework of the body – the skeleton. It is divided into three major groups: cranial bones, trunk bones, and limb bones. Among them, there are 29 cranial bones, 51 trunk bones, and 126 limb bones.

The skeleton of children should actually be 217 to 218 bones, and that of newborns can reach up to 305 bones, because: children have 5 sacral bones, which merge into one as they grow up. Children have 4 to 5 coccygeal bones, which also merge into one later. Children have 2 iliac bones, 2 ischiadic nerves, and 2 toe bones, which merge into 2 hip bones in adulthood. In this way, the skeleton of children is 11 to 12 bones more than that of adults.

The skeleton is the basic structure of complex microorganisms, and the skeletal system is also a limiting factor in the morphological evolution of microorganisms. The skeleton is a hard human organ that constitutes the skeletal system of vertebrates, serving the functions of fitness, utility, and maintenance of the human body; producing red blood cells and white blood cells to a low degree; and storing minerals. The skeleton is composed of various shapes, with complex nature and external structure, allowing it to maintain hardness while reducing weight.

One of the components of the skeleton is mineralized bone tissue, which has a hard, honeycomb-like three-dimensional structure internally; other tissues include bone marrow, periosteum, nerves, blood vessels, and cartilage. The skeleton of the body serves as a support point for the human body and is part of the endocrine system. Adults have 206 bones, and bones are generally connected to each other by joints and tendons. Of these, 6 are ossicles that belong to the sensory organs, and the rest can be divided into 23 cranial bones, 51 trunk bones, and 126 limb bones according to their location.

Function

Support points, maintenance, fitness exercises, hematopoietic function (red bone marrow), storage of lipids and minerals (yellow bone marrow).