Osmosis video - Skeletal system anatomy and physiology

The skeletal system is made up of bones, cartilage, and other connective tissues that provide support and structure to the body. The primary functions of the skeletal system are to protect internal organs, provide support for the body, allow for movement, produce blood cells, and store minerals such as calcium and phosphorus.

Bones are living tissues that are constantly undergoing remodeling, a process in which old bone tissue is broken down and new bone tissue is formed. Bone tissue is composed of cells called osteoblasts, osteocytes, and osteoclasts, as well as a matrix of collagen and mineral salts such as calcium and phosphorus.

Cartilage is a type of connective tissue that provides cushioning and support to joints. It is composed of cells called chondrocytes and a matrix of collagen and proteoglycans. Other connective tissues include ligaments and tendons, which help to connect bones to other bones and muscles, respectively.