D3.3 Homeostasis - IB Biology New Curriculum 2025

All IB Biology Content Videos: https://sites.google.com/view/ibbiolo... This video covers D3.3 Homeostasis for the new IB Biology curriculum (first assessment 2025). It covers the following content: SL and HL: D3.3.1—Homeostasis as maintenance of the internal environment of an organism D3.3.2—Negative feedback loops in homeostasis D3.3.3—Regulation of blood glucose as an example of the role of hormones in homeostasis D3.3.4—Physiological changes that form the basis of type 1 and type 2 diabetes D3.3.5—Thermoregulation as an example of negative feedback control D3.3.6—Thermoregulation mechanisms in humans Additional HL Content: D3.3.7—Role of the kidney in osmoregulation and excretion D3.3.8—Role of the glomerulus, Bowman’s capsule and proximal convoluted tubule in excretion D3.3.9—Role of the loop of Henle D3.3.10—Osmoregulation by water reabsorption in the collecting ducts D3.3.11—Changes in blood supply to organs in response to changes in activity