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Transcript of Histology
Fibers: Collagenous, Reticular, Elastic
Ground substance: empty space in tissues made up of a gelatinous rubbery consistency, which absorbs shock and protects delicate cells Loose Connective loosely organized fibers, abundant blood vessels, empty space underlying all epithelia, nerves, esophagus, fascia between muscles loose network of reticular cells and fibroblasts lymph nodes, spleen, bone marrow Dense Connective closely packed, parallel fibers tendons and ligaments closely packed fibers, random direction dermis, capsules around liver, spleen and kidneys Cartilage relatively stiff connective tissue with a flexible rubbery matrix produced by chondroblasts, which secrete the matrix and surround themselves with it lacunae -> chondrocytes clear, glassy matrix
not usually visible over the ends of bones at moveable joints, areas in the throat weblike mesh external ear parallel collagen fibers similiar to those of a tendon pubic symphysis, intervertebral discs, menisci "fat cells" large, empty looking beneath skin, surrounding organs hard, calcified tissue that composes the skeleton osseous tissue fluid connective tissue that travels through blood vessels RBC's, WBC's, Platelets heart and blood vessels tissue that contracts and exerts a physical force on other tissues long, threadlike, parallel fibers striated, voluntary attached to bones, also in tongue and esophagus limited to the heart striated, involuntary myocytes - intercalated discs non-striated, involuntary walls of viscera, hair follicles, urethra, anus specialized tissue for communication by means of electrical and chemical signals neurons (nerve cells) neurosoma - cell body that houses the nucleus dendrites- recieve signals from other cells axons- sends outgoing signals to other cells found in: brain, spinal cord, nerves, ganglia Tissues for your Dichotomous Key Epithelial: