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