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Chapter 4 (4-1 FOUR TISSUE TYPES, 4-2 Epithelial tissue, Connective Tissue…
Chapter 4
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Connective Tissue: Fill internal spaces, Provide structural support, store energy
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Epithelial Tissue: cover exposed surfaces, line internal passageways and chambers, produce glandular serections
cells that are bound closely together. In other tissue types, the cells are often widely separated by extracellular materials
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continual replacement or regeneration of epithelial cells that are damaged or lost at the exposed surface
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Squamous, Cuboidal, Columnar
Simple Epithelium: consists of a single layer of cells covering the basement membrane
Stratified Epithelium: provides a greater degree of protection because it has several layers of cells above the basement membrane
Simple Squamous, Simple Cuboidal, Simple Columnar, Stratified Squamous, Stratified Cuboidal, Stratified Columnar, Transitional, Pseudostratified
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Bone, blood and fat are examples of connective tissue. Connective tissues are the most diverse tissues of the body
Functions: Support and Protection, Transportation of materials, Storage of energy reserves and Defense of the body
Connective Tissue Fibers: Collagen fibers, Elastic fibers and Reticular Fibers
Blood and Lymph are fluid connective tissues, Cartilage and Bone are supporting connective tissues.
Mucous, Serous, Cutaneous, Synovial
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Mucous; line cavities that communicate with the exterior. Serous; line the sealed, internal subdivisions of the ventral body cavity. Cutaneous; (or skin) covers the surface of the body. Synovial; Bones connect one another a joints or articulations
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Skeletal, Cardiac, Smooth
Skeletal; contains very large, multi-nucleated cells. Cardiac; only found in the heart. Smooth; found in the walls of blood vessels
Neural Tissue is specialized for the conduction of the electrical impulses from one region of the body to another
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Inflammation, damaged tissues are replaced or repaired to restore normal function, Inflammation and regeneration are controlled at the tissue level. the two phases overlap.
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Tissues change with age, and the speed and effectiveness of tissue repairs decrease.
Cancer rates increase with age, and roughly 25% of all Americans develop cancer at some point in their lives