Hormones
Meta Description Learn about hormones in humans, their endocrine glands, functions, and role in coordination for Cambridge IGCSE Biology exams. Introduction Hormones are chemical messengers that control many processes in the human body. While the nervous system acts fast and short-term, hormones act slower but have long-lasting effects , helping maintain homeostasis . In this blog, we will cover: What hormones are Major endocrine glands and their hormones Examples like adrenaline, insulin, and glucagon How hormones control body functions (IGCSE 0970 syllabus) What Are Hormones? Hormones are chemicals produced by endocrine glands and released into the bloodstream . They travel to target organs and trigger specific responses. Key Points: Travel in blood to target organs Act in small amounts Usually slower than nervous signals but longer-lasting Help maintain internal balance (homeostasis) 📌 Example: Insulin regulates blood glucose; adrenaline prepares the body for stress. Maj...