What are the resident cells of connective tissue? - Answers Macrophages, fibroblasts, reticular cells,
mast cells, and adipocytes.
What are Fibroblasts? - Answers The most numerous cell population of connective tissue. They
synthesize fibers: collegenous, elastic, and reticular.
What are reticular cells? - Answers A special fibroblast that synthesizes a fine type of collagen fiber that
offer scaffolding to the parenchyma.
What are adipocytes? - Answers Cells specialized in depositing lipids.
What are the two types of adipocytes? - Answers Unilocular (white)
Multiocular (brown)
What are macrophages? - Answers Monocytes that crossed the vessel walls into the CT. May be named
by location. E.g. Kupffer= liver Osteoclats=bone
What are Mast cells? - Answers Cells filled with basophilic granules and are involved in inflammatory
and allergic reactions.
What are the fiber types? - Answers collagen, elastic, reticular
What are collagen fibers? - Answers The most numerous fibers of connective tissues. Very high tensile
strength, only stretch 5% of initial length. Composed of fibrils.
What is Procollagen? - Answers Substance formed in the fibroblast, transported outside the cell, and
then assembled into collagen fibrils
Explain Collagen as a substance - Answers The most abundant protein in the body. Making up 30% of its
dry weight in humans. Many cells synthesize collagen
What is an important co factor in collagen synthesis? - Answers Vitamin C
What are the main collagen types? - Answers Type 1: skin, bones, dentin, tendons, resist tensil forces
Type 2: found in cartilage. Resists compression
Type 3: expandable organs
Type 4: basal lamina of epithelia
What are elastic fibers? - Answers Networks of long, thin, elastin fibers that allow for stretch and recoil.
0.2-5.0 micrometers in diameter. Can stretch 2 1/2 times. Found in aorta and elastic arteries, lungs,
vocal cords, dermis, pinnacle of ear, epiglottis.