Hormone - A chemical messenger transported through the blood. , Gland - An organ that produces or releases a chemical , Endocrine System - A collection of glands that control body activities through chemical messages, Thymus - Gland that is part of the immune system and makes T-cells, Pituitary Gland - "Master Gland" that regulates growth and other gland activity, Pancreas - Organ that controls insulin and glucagon, Insulin - Hormone that controls blood sugar levels, Hypothalamus - Link between Nervous and Endocrine System, regulates homeostasis,

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