Histology

Tissue Despite its complexity, the human body is composed of only four basic types of tissue: Epithelial Connective Muscular and Nervous

Four Basic types of tissues Cells Extracellular Matrix Main function Nervous elongated processes None Transmission of nervous impulses Epithelial Aggregated polyhedral cells Very small amount Lining of surface or body cavities,glandular secretion Muscle Elongated contractile cells Moderate amount Movement Connective Tissue Several types of fixed & wandering cells Abundant amount Support and protection

Organs and organ systems These tissues exist not as isolated units but as rather in association with one another and in variable proportions, forming different organs and systems of the body.