1. TISSUES AND MEMBRANES Chapter 4

2. © 2004 Delmar Learning, a Division of Thomson Learning, Inc. TISSUES 4 Main types of tissues: –Epithelial tissue protects the body by covering internal and external surfaces –Connective tissue supports and connects organs and tissue

3. © 2004 Delmar Learning, a Division of Thomson Learning, Inc. TISSUES –Muscle tissue contains cell material which has the ability to move the body –Nervous tissue contains cells that react to stimuli and conduct an impulse

4. © 2004 Delmar Learning, a Division of Thomson Learning, Inc. MEMBRANES Epithelial membranes are classified according to secretions produced: –Mucous membranes –Serous membranes Connective tissues support and connect the organs and tissues

5. © 2004 Delmar Learning, a Division of Thomson Learning, Inc. ORGANS AND SYSTEMS Organs are groups of tissues joined together to perform a single function An organ system is a group of organs that together perform a specific function

6. © 2004 Delmar Learning, a Division of Thomson Learning, Inc. ORGANS AND SYSTEMS The human body has 10 organ systems: –Skeletal- Respiratory –Muscular- Circulatory –Digestive- Excretory –Integumentary - Nervous –Reproductive- Endocrine

7. © 2004 Delmar Learning, a Division of Thomson Learning, Inc. DEGREE OF TISSUE REPAIR Damaged tissues are repaired continually Depending on the type and location of injury, some tissues are repaired quickly

8. © 2004 Delmar Learning, a Division of Thomson Learning, Inc. PROCESS OF EPITHELIAL TISSUE REPAIR There are two types of epithelial tissue repair: –Primary repair involves skin where there is no infection present –Secondary repair occurs in large, open wounds with tissue loss