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Types of Tissues - Coggle Diagram
Types of Tissues
Epithelial Tissue
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Protection, absorption, secretion, and excretion
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It can be classified in three ways -
based on shape, arrangement, and function.
Classification based on shape -Squamous (Flattened cells), Cuboidal (cube-like cells), and Columnar (column-like cells).
Classification based on arrangement - Simple (one cell layer), Stratified (several layer of cells), Pseudostratified (single layer), and Transitional (several layers of cells and designed to stretch and return to a normal state without damage).
Classifcation based on function - Mucous membrane (secretes mucus), Glandular epithelium (forms the glands), Endothelium. (lines the interior of the circulatory vessels and heart), and Mesothelium (lines the peritoneal, pleural, and pericardial cavities and covers viscera (internal organs).
Connective Tissue
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Protection, support, binding of different body structures, transport of materials, and immunity.
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Connective Tissue Proper
Loose C.T
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Areolar C.T
Gel-like matrix with all three types of fibers;
Cells: fibroblast, macrophages, mast cells, and some white blood cells.
Wraps and cushions organs; its macrophages phagocytize bacteria; plays important role in inflammation; holds tissue fluid.
Located beneath the skin (underlies epithelial tissue); around blood vessels, muscles and nerves.
Adipose C.T
Matrix as in areolar connective tissue, but very sparse; closely packed adipocytes, or fat cells, have nucleus pushed to the side by large fat droplet.
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Reticular C.T
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Fibers form a soft internal skeleton (stroma) that supports other cell types including white blood cells, mast cells, and macrophages.
Located in lymph nodes, Bone marrow, Spleen, Liver
Dense C.T
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Dense IRREGULAR C.T
Irregular arrangement of Fibers (made primarily of Collagen fibers and few elastic fibers) Cells: Fibroblast, Defense cells and fats cells may be present.
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Located in capsule surrounding the joints, dermis of the skin, outer covering of body tubes like arteries.
Dense REGULAR C.T
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Examples: TENDONS and LIGAMENTS, Aponeuroses and Fascia (Muscle)– TENDONS – Bone
(Bone) – LIGAMENTS – Bone
Elastic C. Tissue
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Wall of Aorta and other large arteries Wall of bronchial tubes (respiratory
passages found in the lungs).
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Nervous Tissue
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Neuron
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Dendrites, Cell body, and Axon.
Main tissue component of the nervous system, which controls the body and coordinates with body parts.
Makes up the brain, spinal cord, and other nerves in the body.
Muscle Tissue
Smooth
Spindle-shaped cells with central nuclei. No striations, cells arranged closely to form sheets.
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Mostly in the walls of hollow organs like the digestive tract, bladder, arteries, and other internal organs.
Cardiac
Branching, striated, generally uninucleated cells that interdigitate at specialized junctions (intercalated disc).
As it contracts, it propels blood into the circulation (Pumps blood); involuntary control
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Skeletal
Skeletal muscles are long, cylindrical, multinucleated cells with obvious striations.
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