Tissues Definition: Types: 1. Epithelial – form protective coverings and function in secretion and absorption. A group of similar cells that perform a specialized function. 2. Connective – support soft body parts and bind structures together. 3. Muscle – produce body movements 4. Nervous – conduct impulses that help control and coordinate body activities. Tissues 1 - cells 2 – Extracellular matrix – nonliving portion that transmits signals from outside cells into cells Parts: Levels of Organization:

Introduction to Tissues A tissue is a group of similar cells That usually have common origin & function. The structure & properties of tissue depends on the nature of extracellular material. Tissues may be hard, semisolid, or even liquid in their consistency, Examples: bone, fat and blood

4 Basic Tissue Types Epithelial Tissue: Covers body surfaces & lines hollow organs, body cavities, and ducts. Forms glands Connective Tissue: Protect & supports the body & its organs. Binds organs together, store energy & help provide immunity to disease- causing organisms Muscular Tissue: Generates physical force Nervous Tissue: Detect changes in a variety of conditions inside & outside the body & respond by generating nerve impulses