Tissue Structure and Function

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

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

7. System Organs working together as functional units

8. 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

9. 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

10. Figure 09.9a

11. Figure 09.9b

13. Pseudostratified Columnar

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

16. 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

17. Adipose

18. Figure 09.11c

19. Figure 09.11d

20. Erythrocytes: Red Blood Cells

21. Leucocytes: White Blood Cells

22. Platelets

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

24. Skeletal Smooth Cardiac

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

26. Neuron