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