Tissues are groups of cells that perform specific functions. There are four main types of tissues: epithelial, connective, muscular, and nervous tissue. Epithelial tissues cover surfaces and line hollow organs, connective tissues connect and support other tissues, muscular tissues contract to cause movement, and nervous tissues conduct electrical signals around the body and central nervous system.

1. Tissues Tissues are groups of cells that are similar in structure and perform a common or related function. Epithelial Connective Muscular Nerve Credits

2. Epithelial Tissue Epithelial tissues are composed entirely of cells. They contain no blood vessels, but are supplied by nerve fibers. They are classified by level and shape. Simple , Stratified , Transitional , Home

3. Stratified Epithelial Consists of two or more cells layers stacked on top of one another. Common in high abrasion areas where protection is important, such as the skin. Squamous , Cuboidal , Columnar , Home

4. Stratified Squamous Composed of several layers, it is thick and well suited for its protective purposes. Found in areas subjected to wear and tear. Columnar , Cuboidal , Home

5. Stratified Cuboidal Very rare in the human body. Found in some mammary glands. Typically two cell layers thick. Squamous , Columnar , Home

6. Stratified Columnar Small amounts are found in the pharynx, the male urethra, and lining some glandular ducts. Occurs at transition areas or junctions between two other types of epithelia. Squamous , Cuboidal , Home

7. Simple Epithelial Composed of a single layer of cells. Found where absorption and filtration occur and a thin layer of epithelial tissue is desired. Squamous , Cuboidal , Columnar , Home

8. Simple Squamous Contains a single layer of flattened cells with disc shaped nuclei and sparse cytoplasm. Main functions are diffusion and filtration. Cuboidal , Columnar , Home

9. Simple Cuboidal Single layer of cube like cells Function in secretion and absorption. Columnar , Squamous , Home

10. Simple Columnar Composed of simple layers of tall cells with oval nuclei. Contain cilia. The non-ciliated type line the digestive tract and gallbladder. Cuboidal , Squamous , Home

11. Connective Tissue Connective tissues are found throughout the body. Main functions are binding, support, protection, insulation, and transportation. C.T. proper , cartilage , bone , blood , Home

12. Blood Blood is the fluid within blood vessels. Most atypical connective tissue. Does not connect things or give mechanical support. Home

13. Bone Also known as osseous tissue. Great ability to support and protect body. Provide cavities for fat storage and synthesis of blood cells. Home

14. Cartilage Stands up to both tension and compression. Tough and flexible. Home

15. Hyaline Cartilage Also known as gristle Most abundant cartilage in the body. Home

16. Elastic Cartilage Much more elastic fiber then hyaline cartilage. Able to maintain its shape and structure while still allowing flexibility. Hyaline , Fibrocartilage , Home

17. Fibrocartilage Matrix has thick collagen fibers. Provides tensile strength and absorbs compression shock Elastic Cartilage , Hyaline Cartilage , Home

18. Connective Tissue Proper connective tissue proper is divided into two subclasses. Loose , Dense

19. Loose Connective Tissue Loose arrangement of fibers. Matrix is occupied by ground substance, and appears to be empty space when viewed through a microscope. Adipose , Reticular , Areolar

20. Dense Connective Tissue Subclass of connective tissue proper. Regular , Irregular

21. Reticular Has loose ground substance with reticular fibers Reticular cells lie in a fiber network. Adipose , Areolar

22. Areoloar Most widely distributed connective tissue in the body. Serves as a universal packing material. Reticular , Adipose

23. Dense Regular connective Tissue Proper Parallel collagen fibers with a few elastic fibers. Major cell type is fibroblasts. Found in tendons, ligaments, and aponeuroses which are flat sheet like tendons. Irregular Dense Connective tissue Proper , Home

24. Dense Irregular Connective Tissue Proper Irregularly arranged collagen fibers with some elastic fibers. Dense Regular Connective Tissue Proper , Home

25. Adipose Adipose tissue is similar to areoloar tissue in structure and function. Great nutrient storing ability. Richly vascularized. Reticular , Areolar

26. Transitional Forms lining of hollow urinary organs. Have the ability to change shape. Home

27. Muscular Tissue Muscle tissues are highly cellular. They are well vascularized tissues. They are responsible for most types of body movements. Skeletal , Smooth , Cardiac

28. Cardiac Found only in the wall of the heart. Contractions help propel blood through the blood vessels to all parts of the body. Smooth , Skeletal

29. Smooth Cells have no visible striations Cells are spindle shaped and contain one centrally located nucleus. Cardiac , Skeletal

30. Skeletal Long, centrically, multinucleate cells with obvious striations. Initiate electrical signals from sensory receptors to effectors. Cardiac , Smooth

31. Nerve Nerve tissues are the main component of the nervous system. Regulate and control body functions. Neurons

32. Neurons Highly specialized nerve cells that generate and conduct nerve impulses. Typically branching cells with cytoplasmic extensions or processes.

33. Credits Stratified Cuboidal Voice: Calida Morris Picture:http://www3.umdnj.edu/histsweb/lab2/images/fstratcuboidal.jpg Startified Columnar Voice: Calida Morris Picture: http://cytochemistry.net/Cell-biology/Medical/25092.JPG Blood Voice: Calida Morris Picture: Calida, Justin, Amanda Bone Voice: Calida Morris Picture: Calida, Justin, Amanda Fibrocartilage Voice: calida Morris Picture: Calida, Justin, Amanda Dense Regular connective Tissue Proper Voice: Calida Morris Picture: Calida, Justin, Amanda Transitional Voice: Calida Morris Picture: Calida, Justin, Amanda Cardiac Voice: Calida Morris Picture: Calida, Justin, Amanda

34. Credits Simple Columnar Voice: Calida Morris Picture:http://www.kumc.edu/instruction/medicine/anatomy/histoweb/epithel/small/Epth005s.JPG Loose Connective Tissue Voice: Calida Morris Picture: http://www.drbio.cornell.edu/Infrastructure/MPM_WWW/MPM_hist/loosehis.jpg Smooth Voice: Calida Morris Picture: Calida, Justin, Amanda

35. Credits Connective Tissue Proper Voice: Calida Morris Picture:http://kentsimmons.uwinnipeg.ca/cm1504/15lab42006/lb4pg6_files/image002.jpg Dense Connective Tissue Voice: Calida Morris Picture:http://www.drbio.cornell.edu/Infrastructure/MPM_WWW/MPM_hist/loosehis.jpg

36. Credits Dense Connective Tissue Voice: Calida Morris Picture:http://w3.ouhsc.edu/histology/Glass%20slides/62_02.jpg Reticular Voice: Calida Morris Picture:http://www.gwc.maricopa.edu/class/bio201/histoprc/retic2.jpg

37. Credits Areoloar Voice: Calida Morris Picture:http://www.gwc.maricopa.edu/class/bio201/histoprc/areol4_s.jpg Dense Irregular Connective Tissue Proper Voice: Calida Morris Picture:http://www.pc.ctc.edu/hart/ctprop/ctprimag/dirr.jpg

38. Credits Adipose Voice: Calida Morris Picture:http://www.unm.edu/~vscience/images/31-2728%20Human%20Adipose%20Tissue%20sec.%20(100x).jpg Skeletal Voice: Calida Morris Picture:http://www.siumed.edu/~dking2/ssb/images/NM016c.jpg

39. Credits Muscular Tissue Voice: Calida Morris Picture:http://www.up.ac.za/academic/medicine/telemed/Hist/018/img/018-001.jpg Neurons Voice: Calida Morris Picture:http://www.mirrorservice.org/sites/home.ubalt.edu/ntsbarsh/Business-stat/opre/neurons.gif

40. Credits Cartilage Voice: Calida Morris Picture:http://www.botany.uwc.ac.za/sci_ed/grade10/mammal/images/cartilage1.gif Stratified Epithelium Voice: Calida Morris Picture:http://www.lab.anhb.uwa.edu.au/mb140/CorePages/Epithelia/Images/oes041he1.jpg

41. Credits Tissues Voice: Calida Morris Picture: http://z.abut.com/f/p/440/graphics/images/en/8682.jpg Epithelial tissue Voice: Calida Morris Picture: http://web.mit.edu/spectroscopy/research/rsch_figs/LSS_fig02.jpg Simple Epithelia Voice: Calida Morris Picture:http://nte-serveur.univ-lyon1.fr/nte/EMBRYON/www.uoguelph.ca/zoology/devobio/miller/01362fig6-1.gif Stratified Squamous Voice: Calida Morris Picture: Calida, Justin, Amanda Simple Squamous Voice: Calida Morris Picture: Calida, Justin, Amanda Nerve Voice: Calida Morris Picture: Calida, Justin, Amanda Simple Cuboidal Voice: calida Morris Picture: calida, Justin, Amanda Connective Tissue Voice:Calida Morris Picture: http://www.steve.gb.com/images/science/connective_tissue.png