Body Fluids and Circulation
Blood reaches every cell while the heart beats without rest. This chapter in NCERT Class 11 Biology, Chapter 15, describes plasma and blood cells, blood groups, clotting, lymph, and the structure and working of the human heart. It traces the cardiac cycle, heart sounds, double circulation through pulmonary and systemic paths, and regulation by nerves and hormones. You will learn to read a basic ECG, recognise blood pressure, and understand common disorders like hypertension, angina, heart failure and atherosclerosis.
Try a free lesson