All connective tissues are made up of cells, gells and fibres. They can all perform a different function. Fibre blast tissue is probably the most difficult to understand because it has so many different tipes of variety. The main cell types for thesetypes are mature cells that take at least two years to develop into fibre blasts. And there's obviously variations if you see the digestive system anchored to each other. That's going to be an issue when we teach students how organs work.