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Epithelial Tissues

Epithelial Tissues

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Epithelial Tissues

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  1. Epithelial Tissues • No intercellular matrix. • Avascular • Contains nerve endings • Lie on a basement membrane. • Able to undergo mitosis. • Develop from all three fetal tissues. • One surface of cells is exposed to a space or cavity.

  2. Epithelial Tissues • Simple Squamous Epithelium • Single layer of cells. • Cells are longer than they are wide. • Nuclei tend to bulge into a space. • Fxns

  3. Epithelial Tissues • Simple cuboidal epithelium

  4. Epithelial Tissues • Simple Columnar Epithelium • Single layer of cells • Height of cells is greater than cell width. • Fxns

  5. Epithelial Tissues • Pseudostratified ciliated columnar

  6. Transitional Epithelial Tissues

  7. Epithelial Tissues • Stratified Squamous • When you are looking at a stratified epithelium, to identify the shape of the cells always look at the top most layer. • Stratified Squamous Epithelium is either keratinized or non-keratinized

  8. Stratified Cuboidal Epithelial Tissues

  9. Smooth MuscleMuscle Tissue • Myocytes lack visible striations. .

  10. Skeletal MuscleTissue • Myocytes are multinucleated. • Myocytes run entire length of muscle. • Myocytes are striated.

  11. Cardiac Muscle Tissue Myocardial cells are short and branched. Myocardial cells are striated.

  12. Nerve Tissue • Neuron

  13. Connective Tissue • Blood

  14. Connective Tissue • Hyaline Cartilage • Most abundant cartilage.

  15. Connective Tissue • Elastic Cartilage • .

  16. Connective Tissue • Fibrocartilage • Primarily located in intervertebral disks and pubic symphysis. • Note how chondrocytes tend to line up. • Compared to a herring bone pattern.

  17. Connective Tissue • Bone

  18. Connective Tissue • Bone

  19. Connective Tissue • Connective Tissue Proper • Loose areolar connective tissue. • Found in most tissues of the body.

  20. Connective Tissue • Connective Tissue Proper • Dense Regular Connective Tissue • Collagen fibers run parallel to one another. • Note cells of dense regular c.t., called fibrocytes, are located between collagen fibers.

  21. Connective Tissue • Connective Tissue Proper • Dense Irregular connective tissue.

  22. Connective Tissue • Connective Tissue Proper • Elastic connective tissue

  23. Connective Tissue • Connective Tissue Proper • Reticular connective tissue

  24. ConnectiveTissue • Connective Tissue Proper • Adipose connective tissue. • Brown adipose tissue is found in newborns and hibernating animals.