Lecture On Fluid and Electrolyte Balance Explained | ADH, RAAS & Sodium Regulation | MBBS | TSMC
Master the fundamentals of Fluid and Electrolyte Balance with this comprehensive physiology lecture. This video is an essential resource for medical, nursing, and health science students, providing a clear and detailed explanation of how the body maintains homeostasis. We will explore the different fluid compartments, the critical hormones involved in regulation (ADH, Aldosterone, ANF), and the vital role of the kidneys. The lecture also includes a deep dive into electrolyte functions, with a special focus on sodium balance and the clinical signs of hyponatremia. IN THIS LECTURE, YOU WILL LEARN ABOUT: [02:10] Body Fluid Composition & Compartments: A breakdown of Intracellular (ICF) and Extracellular (ECF) fluids, their composition, and their importance (60% of total body weight). [07:24] Functions of Body Fluids: Learn about their role in transportation, thermoregulation, metabolic reactions, and maintaining osmotic balance. [12:37] How Fluids Move: An overview of diffusion, osmosis, filtration, and active transport between compartments. KEY REGULATORY MECHANISMS: [17:11] The Thirst Mechanism: The body's primary defense against dehydration. [20:00] Antidiuretic Hormone (ADH): How ADH helps the kidneys conserve water. [20:40] The Renin-Angiotensin-Aldosterone System (RAAS): The crucial pathway for regulating blood pressure and sodium/water retention. [25:39] Atrial Natriuretic Factor (ANF): The hormone that counteracts RAAS to lower blood volume. [35:29] Electrolyte Balance: [37:18] Functions of Electrolytes: Their role in nerve impulses, muscle contraction, and more. [43:25] Sodium (Na+) Regulation: A deep dive into the most abundant extracellular cation and how the kidneys meticulously manage its reabsorption. [56:54] Clinical Correlate: Hyponatremia: Understanding the signs and symptoms of low sodium with the "SALT LOSS" mnemonic. [33:09] Fluid Imbalances: An introduction to clinical conditions like Dehydration (Hypovolemia) and Fluid Overload (Hypervolemia). TRIPURA SANTINIKETAN MEDICAL COLLEGE Real Class room Demonstration/Lecture On: (PHYSIOLOGY ) FLUID AND ELECTROLYTE BALANCE) BY- DR.SAMIR KUMAR NAG (MBBS Batch: 2024- 2025) Conducted on:- 09-06-25
