The Kidney

The Kidney

1. Excretion: The removal of waste products of metabolism from the body

2. The nephron is the structural and functional part of the kidney

3. Urea is formed from excess protein in the liver

4. Anti diuretic hormone(ADH) is released for the pituitary gland if it detects low water content in the blood. Acts on the distal convoluted tubule and collecting duct

5. Filtration occurs in the glomerulus and produces glomerular filtrate

6. Reabsorption occurs in the proximal convoluted tubule

   • Glucose, amino acids and salts are absorbed from the glomerular filtrate into the efferent arteriole by active transport

7. Reabsorption continues in the loop of henle, distal convoluted tubule and collecting duct.

   • Secretion of H+ ions if blood is too acidic can also take place here

8. What ever remains in the collecting duct (urine) passes through the pelvis in the kidney and goes into the bladder via the ureter

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