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Animal Tissues

Animal Tissues. A Quick Introduction. Tissue Categories. Def- Group of cells that work together to perform a specific function Categories Connective tissue Epithelial tissue Muscle tissue Nervous tissue. Connective tissue. Composed of both cells and exogenous matrix material

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Animal Tissues

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  1. Animal Tissues A Quick Introduction

  2. Tissue Categories • Def- Group of cells that work together to perform a specific function • Categories • Connective tissue • Epithelial tissue • Muscle tissue • Nervous tissue

  3. Connective tissue • Composed of both cells and exogenous matrix material • Usually holds other tissues together • Includes osseous tissue (bone) and blood • Displays a variety of appearances

  4. Connective tissues

  5. More Connective Tissues

  6. Epithelial Tissue • Covers surfaces and lines cavities • Protect, secrete • 3 major shapes • Squamous- flat • Cuboidal • Columnar • Major arrangements • Simple • Stratified • Pseudostratified • Basal membrane

  7. Epithilial Tissue Types

  8. Muscle Tissue • Contractile tissue • Contains protein fibers that mediate movement • 3 major types • Cardiac • Skeletal • Smooth

  9. Cardiac Muscle Tissue • Found only in the heart • Striations • Intercalated discs • Branched arangement • Automaticity

  10. Skeletal Muscle Tissue • Moves bones • Striations • Peripheral nuclei • Elongated cells • Parallel arrangment

  11. Smooth Muscle Tissue • Involuntary movement of soft tissues • Arteries • Intestines • Bladder • Non-striated • Spindle shaped

  12. Nervous Tissue • Neurons • display an action potential • Elongated, 3 parts • Dendrite, soma, axon • Transmit impulses • Glial cells • Support neurons • Some insulate neurons

  13. Nervous tissue

  14. Summary • Tissues are groups of cells that work together to perform a specific function • Tissues come in a wide variety of types • Each type has characteristics that allow its identification • The colors seen in tissue samples are artificial and due to the staining technique used. Identification must be made based on more consistent characteristics

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