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Tissues Lab Practical

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  • Simple Squamous

    Thin, flattened cells located Air sacs of lungs, lining of blood vessels

  • Simple Cuboidal

    Cube shaped cells with a centrally located nucleus located Lining of kidney tubules, gland ducts

  • Simple Columnar

    Column-like cells with a basal nucleus located Lining of digestive tract and gall bladder

  • Pseudostratified Columnar

    Columnar & basal cells. Falsely appear layered. All cells rest on basement membrane located Lining of trachea, bronchi, nasal cavity

  • Stratified Squamous

    Several layers of squamous cells flatter towards the surface. located Skin, lining of mouth, esophagus, and vagina

  • Stratified Cuboidal

    Apical layer of cuboidal cells located Large ducts of sweat glands, Seminiferous epithelium of testis

  • Stratified Columnar

    Apical layer of columnar cells located Male urethra, larger ducts of salivary & mammary glands

  • Transitional

    Large flattened cells when stretched; thicker dome-shaped cells when relaxed located Lining of ureters & urinary bladder

  • Loose Connective Tissue

    Fewer protein fibers and more ground substance

  • Areolar loose connective tissue

    Fewer fibers arranged loosely; produced by fibroblast cells located Widely distributed, surrounding nerves, vessels, subcutaneous layer. Fills in between organs, blood vessels and muscles. It binds cell and organs together.

  • Adipose loose connective Tissue

    Composed of fat cells, reticular fibers. Richly vascularized. located Subcutaneous fat layer, around internal organs. Serves for fat storage, insulation & support.

  • Reticular loose connective Tissue

    Network of thin reticular fibers that form a structural framework located Spleen, liver, lymph nodes, bone marrow

  • Dense Connective Tissue:

    More protein fibers and less ground substance

  • Irregular dense connective tissue

    Collagen fibers irregularly arranged. located Found in dermis of skin and capsules of organs

  • Regular dense connective tissue

    Collagen fibers show regular arrangement. Located in ligaments and tendons

  • Elastic Dense Connective Tissue

    It is composed of branching, parallel elastic fibers, interspersed with fibroblasts.Found in structures that need to expand (walls of large arteries).

  • Hyaline Cartilage

    Composed of abundant extracellular matrix made by chondrocytes Hyaline: clear glassy appearance. Located Articular surface of joints, costal cartilage, tracheal rings, epiphyseal plate

  • Elastic Cartilage

    Elastic: ECM criss-crossed by rich network of elastic fibers located external ear, epiglottis

  • Fibrocartilage

    Fibrocartilage: has strong bundles of collagen fibers located intervertebral discs, menisci of knee joint

  • Compact bone

    Calcified extracellular matrix consists of concentric rings; osteocytes in lacunae located Skeletal system

  • Blood cells

    Fluid connective tissue consists of plasma and blood cells: red blood cells, white blood cells and platelets

  • Fibroblast Cell

    Fusiform cell with tapering processes

    Elliptical nucleus

    Function: Make collagen, elastic & reticular fibers.

  • Adipocyte Cell

    Large cell (up to 200 um dia.) with only a thin rim of cytoplasmo due to the presence of a large flat droplet.

    Function: Lipid reserve

  • Reticular Cell

    This stellate cell has long processes usually attached to the reticular fibers.

    Function: Supporting

    "meshwork" in lymph nodes.