→ The cells and fibres of loose connective tissues are loosely arranged in a ground substance which is semi-fluid. The types of loose connective tissues are areolar connective tissue, adipose tissue and reticular connective tissue. → Dense connective tissues contain more fibres and fibroblasts, which are thicker and more densely packed. There are two types: dense regular connective tissue (white fibrous and yellow elastic connective tissues) and dense irregular connective tissue.