Slides for the AQA A-Level Biology specification: 3.6.4.3 Control of blood water potential.
It provides a technical breakdown of renal function, moving from gross anatomy to molecular mechanisms.

Content Overview:

• Anatomy: Structure of the kidney and the detailed architecture of the nephron.
• Ultrafiltration: The role of hydrostatic pressure, the glomerular filtration barrier, and the formation of glomerular filtrate.
• Selective Reabsorption: The mechanism of the Proximal Convoluted Tubule (PCT), including the role of microvilli and co-transport proteins.
• Osmoregulation: The function of the Loop of Henle as a counter-current multiplier.
• Endocrine Control: The role of osmoreceptors in the hypothalamus and the action of Antidiuretic Hormone (ADH) on the permeability of the distal convoluted tubule and collecting duct.

Resource Features:

• Exam-Focused: Exam Questions and Answers