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Tissue Structure and Function

Tissue Structure and Function. Chapter 9 in Textbook Chapter 4 in Lab Book. Tissue. An aggregation of cells and cell products of similar structure and embryonic origin that perform a common function. Histology. The study of tissues, especially their structure and arrangement.

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Tissue Structure and Function

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  1. Tissue Structure and Function Chapter 9 in Textbook Chapter 4 in Lab Book

  2. Tissue An aggregation of cells and cell products of similar structure and embryonic origin that perform a common function

  3. Histology The study of tissues, especially their structure and arrangement

  4. Basic Tissue Types • Epithelial • Connective • Muscle • Nervous

  5. Organ An aggregation of tissues organized into a functional unit

  6. System Organs working together as functional units

  7. Epithelial Tissue • Sheet-like layer of cells • Cover surfaces or line cavities • Often has glandular cells for fluid secretion • Endothelium • Epithelium that lines heart, blood vessels and lymphatic vessels

  8. Epithelial Types • Simple Epithelium • Simple squamous – inside blood vessels • Simple cuboidal – lines ducts, ex. Kidney tubules, mucous glands • Simple columnar – lining of small intestine • Pseudostratified Columnar – trachea, bronchi

  9. Figure 09.9a

  10. Figure 09.9b

  11. Pseudostratified Columnar

  12. Epithelial Types • Stratified Epithelium • Stratified squamous - skin • Transitional – urinary tract and bladder

  13. Connective Tissue • Tissue that connects • Loose connective tissue • adipose (fat) • Dense connective tissue • cartilage • Bone • Vascular tissue • Erythrocytes: Red Blood Cells – carry oxygen • Leucocytes: White Blood Cells – part of the immune system • Platelets - clotting

  14. Adipose

  15. Figure 09.11c

  16. Figure 09.11d

  17. Erythrocytes: Red Blood Cells

  18. Leucocytes: White Blood Cells

  19. Platelets

  20. Muscle Tissue Types • Smooth Muscle (=Involuntary Muscle) • Ex. Small intestine • Skeletal Muscel (=Voluntary Muscle) • Ex. Large muscles of body • Cardiac Muscle

  21. Skeletal Smooth Cardiac

  22. Nervous Tissue • Includes Nerves, Spinal Cord, Brain • Cells are called neurons

  23. Neuron

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