1 / 68

Tissues

Tissues. Epithelial Tissue. Closely joined with very little intracellular material. Blood vessels cannot get in-between cells - tissue is avascular (no blood supply). 2 types – glandular and lining.

phuc
Télécharger la présentation

Tissues

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Tissues

  2. Epithelial Tissue • Closely joined with very little intracellular material. • Blood vessels cannot get in-between cells - tissue is avascular (no blood supply). • 2 types – glandular and lining.

  3. http://trc.ucdavis.edu/mjguinan/apc100/modules/TermsCells&Tissues/introduction/images/tissue1.jpghttp://trc.ucdavis.edu/mjguinan/apc100/modules/TermsCells&Tissues/introduction/images/tissue1.jpg

  4. Function • Covering and Lining – covers body surfaces, walls of cavities. • Anchored to basement membrane.

  5. http://www.anatomyatlases.org/MicroscopicAnatomy/Images/Plate159.jpghttp://www.anatomyatlases.org/MicroscopicAnatomy/Images/Plate159.jpg

  6. ASimple squamous – flattened cells arranged in single layer. • Centrally located nucleus; lines inside of vessels, lining of cavities, air sacs in lungs. • Allows for rapid diffusion because tissue is so thin.

  7. http://www.uoguelph.ca/zoology/devobio/miller/01362fig6-1.gifhttp://www.uoguelph.ca/zoology/devobio/miller/01362fig6-1.gif

  8. BSimple cuboidal – cube-shaped cells with centrally located nuclei. • Often have cilia or microvilli along the edge. • Form walls of ducts (carry secretions throughout body). • Found in kidneys, liver, and glands.

  9. http://science.tjc.edu/Course/BIOLOGY/1409/cuboidal2.6-9.jpg

  10. CSimple columnar – single layer of elongated cells. • Nuclei usually near basement membrane. • Secretes product; found in uterus and digestive organs. • Small intestine - helps to absorb food.

  11. http://www.bluegrass.kctcs.edu/LCC/BSN/Frisbie/simple3.jpg

  12. DStratified squamous – multi-layered tissue - functions in protection. • Forms outer layer of skin, in openings of body for protection.

  13. http://cal.vet.upenn.edu/histo/epithelium/011.gif

  14. EPseudostratified columnar – appears layered but is not. • Nuclei location is not uniform. • May have cilia, located in respiratory system (i.e. trachea).

  15. http://cal.vet.upenn.edu/histo/epithelium/009.jpg

  16. FTransitional – cube-like or irregular shaped cells that can expand in size. • Found in areas of body that require stretching ability – bladder and ureters.

  17. http://www.histology-world.com/photomicrographs/transitional1.jpghttp://www.histology-world.com/photomicrographs/transitional1.jpg

  18. Connective Tissue • Scattered cells found within nonliving material. • Supports other body structures and keeps organs in place. • 2 types of materials used – ground substance and protein fibers.

  19. 3 types of protein fibers 1Collagenous – composed of collagen, fibers are flexible but strong (tendons). 2Elastic – made of elastin – very flexible, not as durable. 3Reticular – made of reticulin and can resist stress.

  20. http://www.anatomyatlases.org/MicroscopicAnatomy/Images/Plate34.jpghttp://www.anatomyatlases.org/MicroscopicAnatomy/Images/Plate34.jpg

  21. Fibroblast - Cell that produces intracellular material in connective tissue.

  22. http://biomaterials.bme.northwestern.edu/images/fibroblast.jpghttp://biomaterials.bme.northwestern.edu/images/fibroblast.jpg

  23. Types of Connective Tissue • ALoose connective tissue (aka areolar tissue)– Made of a matrix of protein fibers. • Structural anchor to body parts • Found between skin and muscle layers and on surface of most organs.

  24. http://faculty.clintoncc.suny.edu/faculty/Michael.Gregory/files/Bio%20102/Bio%20102%http://faculty.clintoncc.suny.edu/faculty/Michael.Gregory/files/Bio%20102/Bio%20102% 20lectures/animal%20cells%20and%20tissues/Image6.jpg

  25. BAdipose tissue – made of adipose cells that contain fat deposits. • Stores energy as fat, forms insulation between organs, acts as shock absorption.

  26. http://www.deltagen.com/target/histologyatlas/atlas_files/musculoskeletal/http://www.deltagen.com/target/histologyatlas/atlas_files/musculoskeletal/ adipose_tissue_white_40x.jpg

  27. CDense connective tissue – tightly packed with protein fibers (mostly collagenous). • 2 types – dense irregular and dense regular.

  28. http://biodidac.bio.uottawa.ca/ftp/BIODIDAC/ZOO/HISTO/MAMMALIA/36-78.GIFhttp://biodidac.bio.uottawa.ca/ftp/BIODIDAC/ZOO/HISTO/MAMMALIA/36-78.GIF

  29. 1Dense irregular – not parallel in arrangement but form mat. • Found in dermis, also wraps around bones and cartilage.

  30. http://oregonstate.edu/~hanba/Projector%20Slides/Projector%20Slides/http://oregonstate.edu/~hanba/Projector%20Slides/Projector%20Slides/ Dense%20Regular%20Connective%20Tissue.jpg

  31. 2Dense regular – parallel in arrangement. • Resistant to stress; main component of tendons and ligaments.

  32. DCartilage – matrix thickened ground substance and dense fibers. • Chondrocytes- cartilage cells that lie within small spaces known as lacunae. • 3 types of cartilage – hyaline, elastic, and fibrocartilage.

  33. http://education.vetmed.vt.edu/Curriculum/VM8054/Labs/Lab7/ IMAGES/elastic%20cartilage%20WITH%20LABEL%20copy.jpg

  34. Types of Cartilage • 1Hyaline – most abundant form of cartilage. • Locations - respiratory tract, ends of bones (movable joints) and ribs, largest portion of fetal skeleton.

  35. http://www.mhhe.com/biosci/ap/histology_mh/hcart.jpg

  36. http://compsoc.dur.ac.uk/~ads/ultrasound.jpg

  37. 2Elastic – firm but flexible tissue. • Supportive framework for ears, end of the nose, epiglottis.

  38. http://micro.magnet.fsu.edu/optics/intelplay/gallery/images/brightfield/elasticcartilage2.jpghttp://micro.magnet.fsu.edu/optics/intelplay/gallery/images/brightfield/elasticcartilage2.jpg

  39. 3Fibrocartilage – solid but flexible. • Found with hyaline cartilage in joints (shock absorption) and intervertebral discs.

  40. http://www.med.mun.ca/anatomyts/msk/Bone13.gif

  41. EBone – mineral salts and collagenous fibers creating hard surface that is durable. • Osteocytes – bone cells found within lacunae. • Periosteum - Membrane surrounding bone • 2 types of bone – spongy, compact.

  42. http://137.222.110.150/calnet/musculo/image/bone%20anatomy.jpghttp://137.222.110.150/calnet/musculo/image/bone%20anatomy.jpg

  43. 1Compact – densely packed matrix. • Lamellae – layers of bone. • Canaliculi - channels that help nutrients diffuse. • Osteon - individual canal with lamellae and osteocytes.

  44. http://www.mhhe.com/biosci/ap/histology_mh/compbone.jpg

  45. http://www.octc.kctcs.edu/gcaplan/anat/images/Image269.gif

  46. 2Spongy – not densely packed, contains blood-forming tissue (red marrow).

  47. http://www.gla.ac.uk/ibls/fab/public/images/boporos4.jpg

  48. FBlood - type of connective tissue composed of red blood cells, white blood cells, and platelets (formed elements); surrounded by plasma (fluid). • Fibers in matrix present during clotting. • Blood responsible for transport (removing wastes, bringing oxygen)

  49. http://uhaweb.hartford.edu/BUGL/images/RBCs.jpg

  50. http://www.gambro.com/upload/Site_com/Business_areas/Gambro_ BCT/Market_details/White_blood_cell.jpg

More Related