Edexcel IGCSE Biology Lesson 28 - The Kidneys

Powerpoint lecture and associated PDF worksheet covering the following in a modern, concise format:

Specification Point 2.72B - Understand how the kidney carries out its roles of excretion and osmoregulation.

Specification Point 2.73B - Describe the structure of the urinary system, including the kidneys, ureters, bladder and urethra.

Specification Point 2.74B - Describe the structure of a nephron, including the Bowman’s capsule and glomerulus, convoluted tubules, loop of Henle and collecting duct.

Specification Point 2.75B - Describe ultrafiltration in the Bowman’s capsule and the composition of the glomerular filtrate.

Specification Point 2.77B - Understand why selective reabsorption of glucose occurs at the proximal convoluted tubule.

Specification Point 2.76B - Understand how water is reabsorbed into the blood from the collecting duct.

Specification Point 2.78B - Describe the role of ADH in regulating the water content of the blood.

Specification Point 2.79B - Understand that urine contains water, urea and ions.

Complete set of Chapter 4 Lessons are available.