A chondroblast is a cell which originates from a mesenchymal stem cell and forms chondrocytes, commonly known as cartilage cells. Chondroblasts that become embedded in the matrix are called chondrocytes. They lie in the space or lacunae present in groups of two or more. The groups are formed by division of a single parent cell. Groups of chondrocy... Found on http://en.wikipedia.org/wiki/Chondroblast