Animal Tissues - Tissues. Categories of Tissues. Jenna Hellack Jan . Categories of Tissues Epithelium Connective Muscle Nervous. Categories of Tissues. Jenna Hellack Jan

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  • Categories of Tissues

    Jenna Hellack Jan

    UNIT XIII

    Animal Tissues

  • Categories of Tissues

    Jenna Hellack Jan

    Categories of TissuesEpitheliumConnectiveMuscleNervous

  • Categories of Tissues

    Jenna Hellack Jan

    EpitheliumLines, covers, and protects other tissues and organs.Characterized by:

    Cells tightly junked togetherThe presence of a cell secretion called the basement membrane.

    Named by:Cell shapeOther characteristics of the cells.

    Squamous, Cuboidal, and Columnar

  • Categories of Tissues

    Jenna Hellack Jan

    Squamous EpitheliumCells very thin, much wider than they are thick.

    Simple Squamous EpitheliumAir sacs of respiratoryLining of blood vessels, heart and lymphatic tubes

    Stratified Squamous EpitheliumSkinVaginaEsophagusMouth

  • Categories of Tissues

    Jenna Hellack Jan

    Examples of Simple Squamous Epithelium

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    Jenna Hellack Jan

    Stratified Squamous Epithelium

  • Categories of Tissues

    Jenna Hellack Jan

    Cuboidal EpitheliumCells cube shaped- secretion and absorption.

    Kidney tubulesDuct and small glandsSurface of ovary

  • Categories of Tissues

    Jenna Hellack Jan

    Columnar EpitheliumElongated cells, much longer than they are wide.

    Simple Columnar EpitheliumA single layer of cells that line the digestive tract, gallbladder and excretory ducts of some glands. Has microvilli at surface for absorption.

    Pseudostratified ciliated columnar epithelium

    Lines the bronchi, trachea, uterine tubes and some of the uterus. Propels mucus or reproductive cells by ciliary action.

  • Categories of Tissues

    Jenna Hellack Jan

    Simple Columnar epithelium

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    Jenna Hellack Jan

    Pseudostratified Ciliated Columnar Epithelium

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    Jenna Hellack Jan

    Connective TissueCharacterized by the cells widely separated from each other in a matrix that is produced by the cells.Tissue protects and supports.Cell Matrix composed of two regions

    GroundLiquid (sol), Gel, Gum or solid

    FibersNon-elastic (= white or Collagen)Elastic (= yellow fibers)

    Types of Connective tissue

  • Categories of Tissues

    Jenna Hellack Jan

    Types of Connective TissueLoose (Areolar) Connective TissueDense Connective TissueAdiposeCartilageBoneBlood

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    Jenna Hellack Jan

    Loose Connective Tissue (Areolar)

    Gel like ground with both elastic and non-elastic fibers running though the ground in many directions.

    Wraps and cushions organsUnder the skin

  • Categories of Tissues

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    Dense Regular Connective Tissue

    Nuclei and fibers arranged in parallel rows.Tendons and ligamentsFibers mostly non-elastic

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    Jenna Hellack Jan

    Adipose (Fat)Function as storage cells for adipose(lipids)Adipose cells contain a large vacuole which in the live cell contains lipids.Cell nucleus and cytoplasm are pushed out to edge of cell membrane.

  • Categories of Tissues

    Jenna Hellack Jan

    CartilageGround of matrix is gum like.Cells are found in Lacunae within the matrix.Fibers may be elastic or non-elastic, or a form of non-elastic called reticular(where the non-elastic fibers of very thin)

    Hyaline Cartilage-example on the ends of bonesElastic Cartilage- example ear cartilageNon-elastic Cartilage- example nose cartilage.

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    Jenna Hellack Jan

    Hyaline cartilage

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    Jenna Hellack Jan

    Elastic Cartilage

  • Categories of Tissues

    Jenna Hellack Jan

    BoneGround of matrix is Solid (Calcium carbonate).Has blood supply and nerves running through the Haversian canal systems.

  • Categories of Tissues

    Jenna Hellack Jan

    Vascular Tissue (Blood)Liquid matrix = plasma

    90% water10%Plasma proteins, electrolytes, hormones, oxygen, glucose etc.

    Formed elementsErythrocytes -48billion(female) to 54 billion (male) cell / ml of blood in humans. Mammals are enucleated while rest of the vertebrates they have nucleiLeukocytes -about 7.5 million / ml of bloodPlatelets -blood clotting

  • Categories of Tissues

    Jenna Hellack Jan

    Blood

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    Jenna Hellack Jan

    Muscle TissueTissue with cells having fibers specialized for contraction.

    Skeletal Muscle (Striated, voluntary) Parallel elongated cells (fibers) multinucleated and each cell is the length of the muscle.Light meat, Dark meatSlow twitch, fast twitch muscle

    Smooth Muscle (Visceral, involuntary)Cells are long and tapered. Organized into sheets of muscle.

    Cardiac MuscleIntercalated discMyogenicbranched

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    Jenna Hellack Jan

    Skeletal Muscle

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    Jenna Hellack Jan

    Smooth Muscle

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    Jenna Hellack Jan

    Cardiac Muscle

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    Jenna Hellack Jan

    Nervous TissueCells specialized to polarize and depolarize.Cell is a neuron

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    Jenna Hellack Jan

    End of Tissue presentation

    UNIT XIIIAnimal TissuesCategories of TissuesEpitheliumSquamous EpitheliumExamples of Simple Squamous EpitheliumStratified Squamous EpitheliumCuboidal EpitheliumColumnar EpitheliumSimple Columnar epitheliumPseudostratified Ciliated Columnar EpitheliumConnective TissueTypes of Connective TissueLoose Connective Tissue (Areolar)Dense Regular Connective TissueAdipose (Fat)CartilageHyaline cartilageElastic CartilageBoneVascular Tissue (Blood)BloodMuscle TissueSkeletal MuscleSmooth MuscleCardiac MuscleNervous TissueEnd of Tissue presentation