Concept of Product Life Cycle. First referenced in the 1920s, the product life cycle applies biological knowledge to products. In nature, a seed is planted, begins to sprout, becomes an adult then eventually withers away and dies. The product life cycle focuses on introduction (seed), growth (sprout), maturity (tree) and decline (death) phases. Each phase has its own marketing mix strategy and implications regarding product, price, distribution and promotion.
The skeletal system is comprised of bones and joints and provides the basic supporting structure of the body. It consists of the joined framework of bones called the skeleton. The human skeleton is made up of 206 bones. Click here for a drawing of a the major bone structures of the body.
The skeletal system forms the mechanical framework of the body (see for example bones of the head and neck and bones of the hands and feet). The bones themselves are formed from several different connective tissues, including: 1  Bone (called  Osseous ) tissue,2  Periosteum, 3  Red Bone Marrow, 4  Yellow Bone Marrow, and.bove: Diagram illustrating the Structure of Long Bones. There are two main types of bone tissue, compact bone and spongy bone. Individual bones in the body can be formed from both of these types of bone tissue. The diagram on the right shows the physical structure of a typical  long bone .