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Tissues of the Body

Tissues of the Body. 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. Epithelium. Two types: membranous epithelia

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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

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