The teaching about the structure of the bones (osteologia)

In humans there are bones of the body and extremities, which with the help of cartilage, ligaments, joint capsules, fascias are combined into a passive musculoskeletal system.

A bone as the authority

Each bone has its embryonic development and form, has its proper place in the body, is always connected with other bones (except the hyoid bone and sesamoid bones, located in the soft tissues). The composition of each bone is composed of representatives of all four kinds of fabrics: connective tissue, endothelium, muscle and nervous tissue, forming a structure that is able very quickly to be reconstructed under the influence of external and internal factors. Functional element of the bone is the bone osteoblasts, capable of producing intermediate protein (ossein) and to postpone mineral salts. Bone actively participates in metabolism, constantly under the influence of the nervous system, hormonal activity of the organism, conditions of supply, the degree of physical activity, etc. So the bone, like all other organs, are very dynamic system. In humans, there are about 250 bones (including teeth). The number of bones impermanent, as, for example, in the skull found more bones.
The function of bone tissue diverse. The first and most important function of support for the soft tissues, the vast majority of which begins and is attached to the bones. Muscles and talk through the junction of bones, produce offset one bone in relation to the other or the surface of the earth. Thus bones participate in the implementation of all moves person. Bones also form a cavity (cranial, spinal, pelvic and breast) to protect internal organs. Craps is red bone marrow, which performs the function of haematopoiesis (blood). Bones provide a function depot for mineral substances and microelements.

The internal structure of connective tissue plates bones

The inner surface of the cavity of the long bones lined with a very thin connective tissue plate (endosteum)containing osteoblasts and osteoclasts, which during the growth form new internal common bone plates and destroy the existing bone substance. Internal connective tissue record spliced fibers with the bone and reticular the basis of the bone marrow.

The bones of the chest