Explain why the nephron is long and convoluted.
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Explanation:
Nephrons have two lengths with different urine concentrating capacities: long juxtamedullary nephrons and short cortical nephrons. The four mechanisms used to create and process the filtrate (the result of which is to convert blood to urine) are filtration, reabsorption, secretion and excretion.
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to concentrate the secreted urine
Explanation:
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