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Epithelial Tissues

Explore the characteristics and functions of epithelial, muscle, nerve, and connective tissues, from avascular epithelial cells to striated muscle fibers and various types of connective tissues. Learn about tissue structures and their roles in the body.

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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.

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