Female human skeleton structure

The female body has 206 bones, which are connected to form the body's framework - the skeleton. It is divided into three major parts: skull, trunk bones and limb bones. Among them, there are 29 skulls, 51 trunk bones, and 126 limb bones.

In fact, children's bones should be 217 to 218, and newborns have as many as 305 bones. This is because: children have 5 sacrums, which merge into one when they grow up. Children have 4 to 5 coccyx vertebrae, and one is formed when they grow up. Children have two iliums, two sciatic bones and two toe bones, which merge into two hip bones in adults. All together, children have 11 to 12 more bones than adults.

Skeleton is the basis of the complexity of microbial structure, and the skeletal system is also a limiting factor in the evolution of microbial shape. Bones are hard organs that make up the endoskeleton of vertebrates. Their functions are to move, support and protect the body; produce red blood cells and white blood cells; and store minerals. Bones are made up of a variety of different shapes and have complex internal and external structures, which allow bones to remain strong while relieving weight. One of the components of bones is mineralized bone tissue, which has a hard honeycomb-shaped three-dimensional structure inside; other tissues include bone marrow, periosteum, nerves, blood vessels and cartilage. The bones of the body play the role of supporting the human body and are part of the body's endocrine system. An adult has 206 bones, which are generally connected to each other by joints and cruciate ligaments. Except for the 6 auditory ossicles which belong to the sensory organs, the bones can be divided into 23 bones of the skull, 51 bones of the trunk, and 126 bones of the limbs according to their location.

Classification

Tissues in bones

1. Connective tissue: bone, cartilage, fibrous connective tissue, blood vessels, blood.

2. Nervous tissue

Function

Applicable, maintenance, fitness, hematopoiesis (red bone marrow), storage of lipids and minerals (yellow bone marrow).

type

Long bones, short bones, flat bones, irregular bones

1. Long bones - humerus, femoral head (length to width = very large)

2. Short bones - carpal bones (length to width = very small, similar to a cube)

3. Flat bones - clavicle (plate), skull, diaphragm

4. Irregular bones - spinal bones, sesamoid bones (such as patella)