Learning objectives
State that carbon dioxide is excreted through the lungs and that the kidneys excrete urea, excess water and excess ions, and identify the kidneys, ureters, bladder and urethra in diagrams
State that urea is formed in the liver from excess amino acids, and identify the cortex and medulla in the structure of a kidney (Extended)
Describe deamination as the removal of the nitrogen-containing part of amino acids to form urea, describe the role of the liver in assimilating amino acids into proteins, and explain the need for excretion in terms of the toxicity of urea (Extended)
Identify the parts of a nephron and its blood vessels (glomerulus, Bowman's capsule, renal tubule and collecting duct) and describe the kidney's functions of filtering the blood, reabsorbing all of the glucose, most of the water and some ions, and excreting urea and excess water and ions in urine (Extended)
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