organs that secrete hormones chemically. includes the PINEAL, HYPOTHALAMUS, PITUITARY, THYROID, AND PARATHYROID, THYMUS, ADRENAL, PANCREAS, OVARIES AND TESTES. CONTROLS AND MAINTAINS HOMEOSTASIS. HORMONE IMBALANCE CAN CAUSE METABOLIC DISEASES SUCH AS DIABETES, HYPOTHYROIDISM AND GIGANTISM. CNS AND ENDORCRINE SYSTEM LINKED BY HYPOTHALAMUS.