2.68 recall that the lungs, kidneys and skin are organs of excretion
2.69 understand how the kidney carries out its roles of excretion and osmoregulation
2.70 describe the structure of the urinary system, including the kidneys, ureters, bladder and urethra
2.71 describe the structure of a nephron, to include Bowman’s capsule and glomerulus, convoluted tubules, loop of Henlé and collecting duct
2.72 describe ultrafiltration in the Bowman’s capsule and the composition of the glomerular filtrate
2.73 understand that water is reabsorbed into the blood from the collecting duct
2.74 understand that selective reabsorption of glucose occurs at the proximal convoluted tubule
2.75 describe the role of ADH in regulating the water content of the blood
2.76 understand that urine contains water, urea and salts.
2.77 understand that organisms are able to respond to changes in their environment
2.78 understand that homeostasis is the maintenance of a constant internal environment and that body water content andbody temperature are both examples of homeostasis
2.89 describe the role of the skin in temperature regulation, with reference to sweating, vasoconstriction and vasodilation
2.90 understand the sources, roles and effects of the following hormones: ADH, adrenaline, insulin, testosterone, progesterone and oestrogen.
The Urinary System
The Kidney & Nephron
The videos and activities below take you through the excretory system in 6th form detail.... you only need to know how mammals (humans) perform excretion and you DO NOT need to know how ions are transported in the loop of henle, only urea, water and glucose.