Matching Pairs Human Body Relative SystemsOnline version Body Systems by John Schubert 1 2 3 4 5 This body system helps get liquid waste out of the body. 6 This body system is designed to fight infectious diseases 7 This system sends messages to the brain 8 This system sends hormones and messages from the brain Urinary System Picture Immune System Nervous System Endocrine System Picture Endocrine System Urinary System Nervous System Picture Immune System Picture