Control of blood water potential (A-level only) (3.6.4.3) | AQA A-Level Biology - (7402) | KnowledgeSet

Control of blood water potential (A-level only)

Biology · A-Level · AQA · AQA A-Level Biology - (7402) · Specification point · 3.6.4.3 · Organisms respond to changes in their internal and external environments (A-level only) · Homeostasis is the maintenance of a stable internal environment (A-level only)

Glomerular filtration

Proximal convoluted tubule reabsorption

Loop of Henle and the medullary gradient

ADH control of blood water potential

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3.6.4.3 Control of blood water potential (A-level only)

Content	Opportunities for skills development
$Osmoregulation as control of the water potential of the blood. The roles of the hypothalamus, posterior pituitary and antidiuretic hormone (ADH) in osmoregulation. The structure of the nephron and its role in: the formation of glomerular filtrate reabsorption of glucose and water by the proximal convoluted tubule maintaining a gradient of sodium ions in the medulla by the loop of Henle reabsorption of water by the distal convoluted tubule and collecting ducts.$

Content

Opportunities for skills development

Osmoregulation as control of the water potential of the blood. The roles of the hypothalamus, posterior pituitary and antidiuretic hormone (ADH) in osmoregulation. The structure of the nephron and its role in: the formation of glomerular filtrate reabsorption of glucose and water by the proximal convoluted tubule maintaining a gradient of sodium ions in the medulla by the loop of Henle reabsorption of water by the distal convoluted tubule and collecting ducts.