When we look at the gells, which is the extra cellular mitric they're mainly just like proteins and sugars. This is what is referred to as ground substance, yes. And then most of that is a water but it has a few other additional things like protical icens and clae proteins. There's three major fibre types: cologin riticular fibres (CRF), elastic fibrestyles (ELIF) and squigglis eigrigglies (EIGGGLIS) So if you think about all the organs of the body, they're going to be pretty much filled with ribcage or cartilage. A lot of tissue