Skeleton intervertebral discs. It is not as hard and rigid as bone but is stiffer and less flexible than muscle. Cartilage is composed of specialized cells called chondrocytes that produce a large amount of extracellular matrix composed of Type II collagen (except Fibrocartilage which also contains type I collagen) fibers, abundant ground substance rich in proteoglycan, and elastin fibers. Cartilage is classified in three types, elastic cartilage, hyaline cartilage and fibrocartilage, which differ in the relative amounts of these three main components. Unlike other connective tissues, cartilage does not contain blood vessels. The chondrocytes are supplied by diffusion, helped by the
System anatomy models. One of the key features of the system anatomy is its simplicity. That, of course, means that the anatomy cannot replace other models or design tools. It is only another way of describing the design, in SW tools, on paper or in the heads of the system engineers. The system anatomy can be used as a starting point when creating an integration anatomy (aka project anatomy) that has more use as a project management tool. The following example is a simplified example of a system anatomy for an issue management system. "This anatomy is drawn with the most basic