GCSE Biology - The Endocrine System (2026/27 exams)

⭐️ Check out our website https://www.cognito.org/ ⭐️ ** WHAT'S COVERED ** 1. Introduction to the Endocrine System Role as a communication system using hormones. How hormones travel via the bloodstream to target cells with specific receptors. 2. The Main Glands of the Endocrine System Pituitary gland (master gland) and its functions. Thyroid gland, thyroxine, metabolism, and negative feedback (TSH). Adrenal glands and adrenaline (fight-or-flight). Pancreas and insulin (blood glucose regulation). Ovaries (oestrogen, egg cells). Testes (testosterone, sperm). 3. Comparison between the Endocrine and Nervous Systems Differences in signalling (hormones vs electrical impulses). Differences in speed and duration of effects. Differences in specificity (general vs precise action). ** CHAPTERS ** 0:00 Introduction 0:31 How the Endocrine System Works 1:29 Pituitary Gland 1:53 Thyroid Gland 2:47 Adrenal Glands 3:10 Pancreas 3:25 Testes & Ovaries 4:08 Endocrine vs Nervous System ** PLAYLISTS **    • GCSE Maths (9-1)      • GCSE Biology (9-1)      • GCSE Chemistry (9-1)      • GCSE Physics (9-1)      • A-Level Biology   #GCSE #Biology #study #revision #school #exam #AQA #OCR #Edexcel #IGCSE