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Connective tissue is classified into: |
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proper, special, & adipose tissue |
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The components of connective tissue are: |
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cells (fibroblasts/cytes), fibers, and ground substance |
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support, protection, defense, nutrition & storage, repair & regeneration |
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The prodominant fiber type in proper CT is: |
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fibrous tissue (skin, tendon, ligg), bone |
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hyaline & elastic cartilage |
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meshwork in liver & hematopoietic organs (reticular) |
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Proper CT can either be _____ or _____. |
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Dense CT is classified as either _____ or _____. |
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loose, random arrangement of thin fibers; abundant ground substance; soft & compliant |
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found in gut lamina propra, perivascular, surrounding glands, skin |
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fibroblasts; densely packed fibers; regular & parallel orientation; minimal ground substance |
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functions to connect muscle to bone; found in tendons & ligg |
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few fibroblasts; thick, densely packed fibers in random orientation; minimal ground substance |
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usually covered by epithelium; concentrated where forces from from different directions (skin) |
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Special CT is different than Proper CT in the: |
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proportions of cells, fiber types and matrix |
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The types of special CT are: |
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reticular, elastic, and mucous |
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delicate branched fiber network; can't see without routine stains |
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found in lymphatic/hematopoietic organs (lymph nodes, thymus, spleen), lung, liver |
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diffcult to see on H&E; function in stretching, elastic recoil, resiliance |
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found in vessels, external ear, vocal chords, trachea, lung, skin |
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embryonic type; predominant element = matrix; scarce fibers; low cellularity; non found in mammalian adults, rare in non-mammalian adults |
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found in comb of chicken, turkey wattles, umbilical cord, subdermal-embryo |
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rare, heritable condition in which there is a lack of collagen tensile strength, resulting in skin hyperextensibility, joint laxity, skin & vessel fragility and poor wound healing |
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The resident cells of CT are: |
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fibroblasts, macrophages, mast cells |
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permanent cells that function in suport and healing & repair; fibroblasts are active in producing fibers and matrix; fibrocytes are inactive and impt in maintenance |
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Fibroblasts & fibrocytes have a _____ shape with a _______, _______, ______ nucelus. |
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spindle; oval, elongated, flattened |
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Macrophages' functions are: |
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phagocytosis and antigen presentation |
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Macrophages are ________ and have _______, _______ nuceli and _______ cytoplasms. |
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round to polygonal; oval/indented, eccentric, pink to foamy |
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Mast cells are seen in ______ numbers and are associated with ______. |
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Mast cells function in _____ and are found in the _____, _____, and _____. |
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hypersensitivity; skin, respiratory tract, GI tract |
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Mast cells are _____ with a ______, ______ nucleus and ________ cytoplasm. Their cell borders are _____. |
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"round"; round to oval, central; abundant; distinct |
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The extracellular matrix is made up of: |
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ground substance and fibers. |
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Components of ground substance include: |
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proteoglycans, glycosaminoglycans, and adhesive glycoproteins |
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Adipose tissue is essentially _____. It can be broken into _____ & ______. |
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White fat functions mainly in: |
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energy storage & shock absorption |
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White fat cells are _____ & ______ with ______, ______ nucleus and ______ cytoplasm filled with _______________. |
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large & polygonal; eccentric, flattened; scant; a large single lipid droplet |
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perirenal, interscapular, mediastium |
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Brown fat cells are ______ with an ______, _______ & ________ nucelus and ________ cytoplasm. |
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smaller; eccentric, peripheral & "plump"; eosinophilic |
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Brown fat is brown because of: |
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