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Chapter 4 Lecture - Printable.pdf - Chapter 4 Tissue: The...

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1Chapter 4Tissue: The Living FabricChapter 4 OutlineTissuesEpithelial TissueLining and GlandularConnective TissueCT Proper, Cartilage, Bone and BloodMuscle TissueSkeletal, Cardiac, SmoothNerve TissueMembranesTissue RepairTissuesTissuesare groups of _____ similar instructure and functionCells work togetherCells are specializedThe four types of tissues_________- covering_________- support_________- movement_________- controlGeneral functions
2TissuesTissues are organized into organsOrgans must have at least ___ types oftissueusually contain all 4 tissue types_______________the study of tissuesSpecimens must be fixed and thinly sectionedSpecimens must be stained to distinguishanatomical structuresEpithelial TissueEpitheliuma sheet of cells that covers abody surface or lines a cavityOccurs in the body as:CoveringandliningepitheliumOuter layer of skinLines open cavities (i.e., digestive, respiratory)Covers walls and organs of the ventral body cavityGlandularepitheliumMakes the glands of the body
3Epithelial TissueSpecial CharacteristicsDistinguishing characteristics1. Cellularityclosely packed cellsClosely packed with little ____________ material2. Polarityhas an apical and basal surfaceApical and basal cells differ in structure andfunctionApical surfaces can be smooth, some canhave microvilli, or cilia3.Specialized contactshold adjacent cells togetherEpithelial TissueSpecial Characteristics4.Supported by underlying connective tissueBasement membranereinforces the epithelialsheet.Epithelial TissueSpecial Characteristics
5.AvascularEpithelial TissueSpecial Characteristics
6.Has a highregenerationcapacityIf/when apical/basal polarity is destroyed(friction, hostile substances), cells arereplaced (as long as there is adequatenutrition)Classification of EpitheliaEach epithelial tissue is given two names1.The first name indicates thenumber of__________present
2.The second name describes the_______the cellsof
4
5Classification of EpitheliaEpithelial Tissue_________ epithelia’s main functionsare absorption, secretion and filtration_________ epithelia’s main function isprotectionEpithelial Tissue - SimpleSimple SquamousSingle layer of flattened cells with disc-shaped nucleiand sparse cytoplasmFunctionsfiltrationProvide a slick, friction-reducing lining in bloodvessels and hollow organs of the body- ________Present in the kidney glomeruli, lungs, lining of heart,blood vessels, lymphatic vessels, and in serousmembranes
6Epithelial Tissue - SimpleSimple CuboidalSingle layer of cube-like cells with large,spherical central nucleiFunction insecretionandabsorptionPresent in kidney tubules, ducts and secretoryportions of small glands, and ovary surfaceEpithelial Tissue - SimpleEpithelial Tissue - Simple
7Simple Columnar

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Term
Fall
Professor
jones
Tags
Biology, Membranes, Epithelial tissue

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