why efferent arteriole is thinner as compared to afferent arteriole
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The efferent arteriole carries blood away from the glomerulus. Because it has a smaller diameter than the afferent arteriole, it creates some resistance to blood flow, producing the back-up of blood in the glomerulus which creates higher pressure in the glomerular cavity.
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The efferent arteriole carries blood from the glomerlus.....so it has lessar diameter as compared to afferent arteriole
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