Relacionar Columnas Tissues, Organs, and Body SystemsVersión en línea Review the tissue, organ, and body systems. por Janelle Ruiz 1 Epithelial Tissue 2 Muscular System 3 Digestive System 4 Circulatory System 5 Nervous System 6 Connective Tissue 7 Respiratory System Lines organs and protects inside of body from outside world Heart, veins, capillaries Supports organs and joins tissue Brain, spinal column, axons Responsible for gas exchange (oxygen- carbon dioxide) with the outside environment