Anatomy and Physiology 101: Chapter 5 Lecture 4 - What are tissues? (Histology)

This preview shows page 1 - 12 out of 39 pages.

Chapter 5 THE TISSUE LEVEL OF ORGANIZATION - HistologyTissue engineering video:ting-the-impossible-can-be-possible.html
PRINCIPAL TYPES OF TISSUETissue Engineering:g/asset/nsn11_vid_bodyparts/Four Types of Tissue: EpithelialConnectiveMuscleNervous
EMBRYONIC ORIGIN OF TISSUES AND MAJOR ORGANSThree Germ Layers:Ectoderm – outer Mesoderm – middleEndoderm – innerEpitheliumNervousMuscle
Slide 4EXTRACELLULAR MATRIX (ECM)Complex, nonliving material between cells in a tissueDifferent tissues have different amounts and componentsMajor components:1) Water2) Proteins Structural proteins (collagen)Glycoproteins—proteins with a few carbohydrate attachments that help cells adhere and communicate
Connective Tissue MembranesEncapsulate organs-Ex. Kidney capsuleLine moveable joints- Synovial membranes
Epithelial MembranesSerous membranes-Slippery covering of internal organs of the trunk (viscera)-Prevents adhesionsMucous membranes- Lines hollow organs- Protects against organ contentsCutaneous membranesRelatively dry membrane covering the body (skin)Protects from external environment
Slide 7EPITHELIAL TISSUE: TYPES AND LOCATIONSLack blood vessels, tightly packed, able to divide, classified by shape and number of layersEpithelium is divided into two types:Membranous (covering or lining) epitheliumGlandular epitheliumLocationsMembranous epithelium—covers the body and some of its parts; lines the serous cavities, blood and lymphatic vessels, and respiratory, digestive, and genitourinary tractsGlandular epithelium—secretory units of endocrine and exocrine glands
Slide 8EPITHELIAL TISSUE: FUNCTIONSProtectionSensory functionsSecretionAbsorptionExcretion
Slide 9EPITHELIAL TISSUE STRUCTUREGeneralizations about epithelial tissueLimited amount of matrix materialMembranous type attached to a basement membraneAvascularCells are in close proximity, with many tight junctionsCapable of reproducing itself
Slide 10EPITHELIAL TISSUE: CLASSIFICATIONMembranous (covering or lining) epithelium Number of layersSimple – oneStratified – manyPseudostratified – single but looks like manyShape of cell in superficial layerSquamous – flatCuboidal - cubeColumnar – tall
Slide 11EPITHELIAL TISSUE: SIMPLE SQUAMOUSOne-cell layer of flat cellsPermeable to many substancesExamples: endothelium—lines blood vessels; mesothelium—pleura, air-sacs of lungs

Upload your study docs or become a

Course Hero member to access this document

Upload your study docs or become a

Course Hero member to access this document

End of preview. Want to read all 39 pages?

Upload your study docs or become a

Course Hero member to access this document

Term
Fall
Professor
TBD
Tags
Collagen

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture