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Tissues of the Body

Tissues of the Body

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Tissues of the Body

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  1. Tissues of the Body

  2. From Cells to Organ Systems • Cells combine to form tissues, and tissues combine to form organs • Cells combine to form four primary tissues • Epithelial tissue • Connective tissue • Muscle tissue • Nervous tissue

  3. Epithelium • Two types: • membranous epithelia • form the coverings or linings of organs • glandular epithelia • form exocrine and endocrine glands

  4. Epithelial Tissue

  5. Epithelial Tissue

  6. Epithelium-Human Stomach

  7. Glandular Epithelia • Epithelial tissues illustrate a basic biological principle: that structure closely correlates with function

  8. Figure 4.4

  9. ConnectiveTissue Section 4-1 • Binds the cells and organs of the body together • All connective tissues consist of two basic components: cells and extracellular fibers • Two types of connective tissue are: • Connective tissue proper • Specialized connective tissue

  10. Connective Tissue

  11. Connective Tissue

  12. Connective Tissue • An important structural component of organs • Consists of two types: • Dense connective tissue • Loose connective tissue

  13. Connective Tissue

  14. Specialized Connective Tissues • Perform specific functions essential to homeostasis • The body contains three types of specialized connective tissue: • Cartilage • Bone • Blood

  15. Cartilage • Consists of specialized cells embedded in a matrix of extracellular fibers and other extracellular material • Blood • Contains blood cells, platelets, plasma

  16. Osseous Tissue • Bone • Consists of bone cells (osteocytes) and a calcified cartilage matrix • Two types of bone tissue exist: spongy and compact

  17. Osseous Tissue

  18. Muscle Tissue • Consists of specialized cells that contract when stimulated • The body has three types of muscle tissue: • Skeletal (voluntary) • Cardiac (involuntary) • Smooth muscle (involuntary)

  19. Muscle Tissue

  20. MuscleTissue

  21. Nervous Tissue • Contains specialized cells that conduct impulses • Conducting cells, called neurons, transmit impulses from one region of the body to another. • Nonconducting cells, neuroglia, are a type of nervous system connective tissue.

  22. Nerve Tissue

  23. Nerve Tissue

  24. OrganSystems • Tissues combine to form organs. • Organs are discrete structures that have evolved to perform specific functions • Most organs do not function alone, they are part of a group of cooperative organs, called an organ system.

  25. Let’s go to the Video Body Tissues