A-Level Biology - Heart Structure - Chambers | Valves | Blood Vessels (2026/27 exams)

⭐️ Check out our website https://www.cognito.org/ ⭐️ *** WHAT'S COVERED *** 1. The Function and Orientation of the Heart * The heart as a muscular organ that pumps blood around the body. * How to correctly identify the left and right sides of the heart in diagrams. 2. The Chambers and Valves of the Heart * An overview of the four chambers: the two atria and two ventricles. * The location and function of the atrioventricular and semi-lunar valves. * The specific names for each chamber and valve, including the tricuspid and mitral valves. * The function of the septum in separating oxygenated and deoxygenated blood. 3. Heart Wall Thickness * An explanation for why the ventricle walls are thicker than the atrium walls. * Why the wall of the left ventricle is the thickest in the heart. 4. The Major Blood Vessels * An introduction to the Vena Cava, Pulmonary Artery, Pulmonary Vein, and Aorta. * The complete pathway of blood flowing into, through, and out of the heart. 5. Blood Supply to the Heart Muscle * The function of the coronary arteries in providing the heart muscle with oxygen. *** CHAPTERS *** 0:00 Introduction to the Structure of the Heart 0:22 The Heart's Function and Anatomical Orientation 1:04 The Four Chambers of the Heart 1:17 Heart Valves Explained: Atrioventricular and Semi-Lunar Valves 1:49 Naming the Chambers and Valves of the Heart 2:32 The Septum: Separating Oxygenated and Deoxygenated Blood 2:57 Why Heart Chamber Walls Have Different Thicknesses 3:42 Blood Vessels and the Path of Blood Through the Heart 5:12 The Coronary Arteries: Supplying Blood to the Heart Muscle *** PLAYLISTS *** https://youtube.com/playlist?list=PLidqqIGKox7VzYfPIVt8T09xOLNcolCe4&si=8JmDajxjtba6rdc3 https://youtube.com/playlist?list=PLidqqIGKox7UZ3mWhbHv2aA_1vnbsfRPq&si=q3hEKdA4v7kbfwMe https://www.youtube.com/playlist?list=PLidqqIGKox7UTimdJ3eFcnt6xL9GUt2a6 https://youtube.com/playlist?list=PLidqqIGKox7XPh1QacLRiKto_UlnRIEVh&si=orIUwL3o2jOoiYjT https://youtube.com/playlist?list=PLidqqIGKox7X5UFT-expKIuR-i-BN3Q1g&si=DcihOwUkd9oWbbdp https://youtube.com/playlist?list=PLidqqIGKox7WeOKVGHxcd69kKqtwrKl8W&si=Y8MsO-FK948jnxpS https://youtube.com/playlist?list=PLidqqIGKox7UVC-8WC9djoeBzwxPeXph7&si=-7i5Iq7yOeJrhtu6 https://youtube.com/playlist?list=PLidqqIGKox7VKJD2WxRhoKaI6JGLVean8&si=NH_Q1ujhVgACM2FU #alevel #Biology #study #revision #school #exam #AQA #OCR #Edexcel