B elastic fiber elasticity are smaller in diameter

This preview shows page 14 - 16 out of 21 pages.

b.elastic fiber; elasticity- are smaller in diameter than collagen fibers,branch and join together to form a fibrous network within a connectivetissue. An elastic fiber consists of molecules of the protein elastinsurrounded by a glycoprotein named fibrillin, which adds strength andstability. Because of their unique molecular structure, elastic fibers arestrong but can be stretched up to 150% of their relaxed length withoutbreaking. Equally important, elastic fibers have the ability to return totheir original shape after being stretched, a property called elasticity.Elastic fibers are plentiful in skin, blood vessel walls, and lung tissue.c.reticular fiber- consisting of collagen arranged in fine bundles with acoating of glycoprotein, provide support in the walls of blood vesselsand form a network around the cells in some tissues, such as areolarconnective tissue, adipose tissue, nerve fibers, and smooth muscle tissue.d.Stroma– supporting framework5.Describe the structure, function and location of each of the types of connective tissue listedbelow.embryonic connective tissuesDownloaded by UBC Heart and Stroke VP External ([email protected])lOMoARcPSD|13419269
I.mesenchymea.description– irregularly shaped mesenchymal cells embedded insemifluid ground substance that contains delicate reticular fibersb.location– almost exclusively under skin and along developing bones ofembryo; some in adult connective tissue, especially along blood vesselsc.function– forms almost all other types of connective tissueII.mucous connective tissuea.description– widely scattered fibroblasts embedded in viscous, jellylikeground substance that contains fine collagen fibersb.location– umbilical cord of fetusc.function– supportloose connective tissueI.areolar connective tissue “packing material of the body”a.description– one of the most widely distributed connective tissues;consists of fibers arranged randomly and several kinds of cells embeddedin semifluid ground substanceb.location– in and around every body structure: in subcutaneous layerdeep to skin; papillary region of dermis of skin; lamina propria ofmucous membranes; around blood vessels, nerves and body organsc.function– strength, elasticity and supportII.adipose tissuea.description- cells derived from fibroblasts (called adipocytes) that arespecialized for storage of triglycerides (fats) as a large, centrally locateddroplet. Cell fills up with a single, large triglyceride droplet, andcytoplasm and nucleus are pushed to periphery of cell. With weight gain,amount of adipose tissue increases and new blood vessels form.b.Location- subcutaneous layer deep to skin, around heart and kidneys,yellow bone marrow, padding around joints and behind eyeball in eyesocket.

Upload your study docs or become a

Course Hero member to access this document

Upload your study docs or become a

Course Hero member to access this document

End of preview. Want to read all 21 pages?

Upload your study docs or become a

Course Hero member to access this document

Term
Fall
Professor
professor_unknown
Tags
Stroke VP External

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture