epithlst.htm

Page 5 - Major Tissue Types
1. Epithelial Tissue
2. Connective Tissue
3. Muscular Tissue
4. Nervous Tissue


1. Epithelial Tissue - remember, these line surfaces so look for a lining
    - Lumen - a space or cavity (such as in a blood vessel, intestine, uterus, etc.) lined by an epithelium
   - Basement Membrane - a non-cellular glycoprotein glue that attaches epithelia to their underlying connective tissues

   a. Squamous 
      (1) Simple Squamous
          - found: mesothelia, endothelia, alveoli of lungs, Bowman's capsule of kidney, kidney's loop of Henle
          - function: absorption, secretion
            Slide box # 1 - Mesothelium as seen from above, not cross section so you cannot tell how
              thick it really is
            Slide box #2 - Human Simple Squamous Epithelium - this is a section from a kidney and it has a lot of 
              simple cuboidal and simple squamous.  Compare this slide to [Kidney] for labeled details
               - other slide boxes w/ this epithelium: 
               Box 100 - artery/vein, Box 102-vein, box 103-vein - the lining of all blood and lymph vessels is 
               known as the Endothelium and it is simple squamous epithelium
               Box 200 and Box 210 - lungs - both surfaces of the respiratory membrane is lined by simple squamous epithelium
      (2) Stratified Squamous
          - found: skin, oral cavity, esophagus, vagina
          - function: protection
             Slide box # 3 - Human Stratified Squamous Epith - noncornified.  This is a superb slide of the epithelium 
              found lining the esophagus or vagina
             Slide box # 4 - Human Skin – Pigm&Non-Pigm.
             Slide box # 5 - Human Palmar Skin - superb slide of Cornified, stratified squamous epithelium
             Slide box # 6 - Human Axillary Skin
             Slide box # 7 - Human Scalp Hair Shaft
             - other slide boxes w/ this epithelium: Box 301 - Esophagus-Stomach Junction (has stratified squamous and simple cuboidal)
   b. Cuboidal
      (1) Simple Cuboidal
          - found: tubules of kidney, glands, ducts
          - function:  absorption, secretion
             Slide box # 9 - Human Simple Cuboidal Epith - this slide has BOTH simple cuboidal and simple columnar
             - other slide boxes w/ this epithelium: box 500 - Kidney
      (2) Stratified Cuboidal
          - found:  very few places such as very large ducts - NO SLIDES
   c. Columnar
      (1) Simple Columnar
          - found:  uterus, fallopian tube, GI tract from stomach to rectum
          - function:  absorption, secretion
             Slide box # 9 - Human Simple Cuboidal Epith - this slide has BOTH simple cuboidal and simple columnar
             - other slide boxes w/ this epithelium: and of the slides for the gastrointestinal tract from the stomach to the rectum
               - box: 301 - Esophagus-Stomach Junction (has stratified squamous and simple cuboidal)
               - box: 302 - Fundic Stomach; box 303 - Mammal Stomach; 304- Duodenum – Primate; 305- Human Jejunum
               - box: 306 - Human Ileum; 307 - Human Colon
      (2) Pseudostratified Ciliated Columnar - look for the cilia
          - found:  trachea, bronchi, larynx, nasal passages, paranasal sinuses
          - function:  secretion
             Slide box # 10 - Human Pseudostratified Ciliated Columnar Epith - this is a slide of a trachea
             - other slide boxes w/ this epithelium: box 203 - Mammal Trachea; box 204 - Human Trachea
      (3) Stratified Columnar
          - found:  rare - few very large ducts and male reproductive tract - NO SLIDES
   d. Transitional - stratified, however the cells do not flatten near the surface like stratified squamous
       - cells are rounded (scalloped on the surface) and some may be binucleated 
       - found:  urinary bladder, ureter, renal pelvis
       - function:  distention, expansion
       Slide box # 11 - Human Transitional Epith
        - other slide boxes w/ this epithelium: box 501 - Human Bladder; box 502 - Primate Ureter