Topic 11.3: The Kidney and Osmoregulation
- Essential idea:
Nature of science:
- Curiosity about particular phenomena—investigations were carried out to determine how desert animals prevent water loss in their wastes. (1.5)
11.3 U 1 Animals are either osmoregulators or osmoconformers.
11.3 U 2 The Malpighian tubule system in insects and the kidney carry out osmoregulation and removal of nitrogenous wastes.
11.3 U 3 The composition of blood in the renal artery is different from that in the renal vein.
11.3 U 4 The ultrastructure of the glomerulus and Bowman’s capsule facilitate ultrafiltration.
11.3 U 5 The proximal convoluted tubule selectively reabsorbs useful substances by active transport.
11.3 U 6 The loop of Henle maintains hypertonic conditions in the medulla.
11.3 U 7 ADH controls reabsorption of water in the collecting duct.
11.3 U 8 The length of the loop of Henle is positively correlated with the need for water conservation in animals
11.3 U 9 The type of nitrogenous waste in animals is correlated with evolutionary history and habitat.
11.3 A 1 Consequences of dehydration and overhydration.
11.3 A 2 Treatment of kidney failure by hemodialysis or kidney transplant.
11.3 A 3 Blood cells, glucose, proteins and drugs are detected in urinary tests.
11.3 S 1 Drawing and labelling a diagram of the human kidney.
11.3 S 2 Annotation of diagrams of the nephron.
In The News
In The News
Alex Lee discusses Topic 11.3