Body System Checklist - Endocrine System Major functions of endocrine system. Describe what hormones are and what they do. List 2 hormones involved with the Endocrine system and their function. Diagram that includes the major parts - hypothalamus, pituitary, thymus, thyroid, parathyroid, adrenals, pancreas, ovaries, and testes - and list the function(s) of each. Explain how your body system works with other systems in the body. You will need at least 3 examples. Find 4 facts about your body system. You may list the facts as sentences or use them to create trivia questions.