Those with advanced training and certification, such as the CPN credential, may also receive higher compensation. RNâs that go on to become Advanced Practice Registered Nurses (APRNs), including Pediatric Nurse Practitioners (PNPs), can also expect higher salaries.
CELLS: The most common connective tissue cells are: 1  Fibroblasts, which secrete collagen and other elements of the extracellular matrix. 2  Adipocytes, which store fat. 3  Mast cells, macrophages, and lymphocytes, cells with immune function which participate in inflammation.
To date, 29 types of collagen have been identified. Over 90% of the collagen in the body is of type 1-5, with the most abundant being Type 1. Collagen Type One: Skin, tendon, vascular, ligature, organs, bone; Collagen Type Two: Cartilage; Collagen Type Three: Reticulate fibers (connective tissues) Collagen Type Four: Forms bases of cell basement membrane