V fibers embedded in the extracellular matrix between

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V.Fibers- embedded in the extracellular matrix betweenthe cells: collagen fibers, elastic fibers, and reticularfibers. They function to strengthen and supportconnective tissues.a.collagen fiber- very strong and resist pullingforces (tension), but they are not stiff, whichallows tissue flexibility. The properties of differenttypes of collagen fibers vary from tissue to tissue.b.elastic fiber; elasticity- are smaller in diameterthan collagen fibers, branch and join together toform a fibrous network within a connective tissue.An elastic fiber consists of molecules of theprotein elastin surrounded by a glycoproteinnamed fibrillin, which adds strength and stability.Because of their unique molecular structure,elastic fibers are strong but can be stretched up to150% of their relaxed length without breaking.Equally important, elastic fibers have the ability toreturn to their original shape after beingstretched, a property called elasticity. Elastic
fibers are plentiful in skin, blood vessel walls, andlung tissue.c.reticular fiber- consisting of collagen arrangedin fine bundles with a coating of glycoprotein,provide support in the walls of blood vessels andform a network around the cells in some tissues,such as areolar connective tissue, adipose tissue,nerve fibers, and smooth muscle tissue.d.Stroma– supporting framework7.Describe the structure, function and location of each of the types ofconnective tissue listed below.
c.function– forms almost all other types ofconnective tissue
b.location– umbilical cord of fetusc.function– support
membranes; around blood vessels, nerves andbody organsc.function– strength, elasticity and supportII.adipose tissuea.description- cells derived from fibroblasts(called adipocytes) that are specialized for storageof triglycerides (fats) as a large, centrally locateddroplet. Cell fills up with a single, largetriglyceride droplet, and cytoplasm and nucleusare pushed to periphery of cell. With weight gain,amount of adipose tissue increases and new bloodvessels form.b.Location- subcutaneous layer deep to skin,around heart and kidneys, yellow bone marrow,padding around joints and behind eyeball in eyesocket.c.Function– reduces heat loss through skin; serves

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