Relacionar Columnas Human Body Relative SystemsVersión en línea Body Systems por John Schubert 1 This system sends messages to the brain 2 3 4 This body system is designed to fight infectious diseases 5 This system sends hormones and messages from the brain 6 This body system helps get liquid waste out of the body. 7 8 Urinary System Picture Immune System Picture Endocrine System Immune System Endocrine System Picture Urinary System Nervous System Nervous System Picture