This video explains how glands produce hormones. It tells how the hormones are either amino acid-based and water-soluble, or steroidal and lipid-soluble, and how the HPA axis affects the stress response. timeline: 0:00 Introduction 2:32 Endocrine System 2:58 Hormone production 4:18 Amino Acid Based and Water Soluble 4:44 Steroidal and Lipid Soluble 6:15 Hormone Cascades 6:30 HPA Axis Affects Your Stress Response