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