Blog Archive
Tuesday, 8 November 2011
2.71 Ultrafiltration
• The nephron carries of the filtration of blood which results in filtered blood (clean) as well as waste represented by urine.
•The urine will emerge from the end of the Medulla and carry on into the pelvic region.
• urine contains water, salts and (urea)
• The filtration begins in the bowman's capsule.
• First the blood arrives in the kidneys through the afferent arteriole with HIGH pressure.
• It continues into a twisted part in the arteriole called the glomerulus (inside the capsule)
• Then the blood exits the capsule out of a smaller arteriole than the Afferent called the Efferent
• The blood pressure increases in the glomerulus
• The high pressure forces plasma (water, salts, amino acids, glucose and urea) out inside the blood.
• These are forced into the inside of the bowman's capsule
• When the plasma is forced into the capsule we change the name of it to glomerula filtrate
• so the blood has been filtered by pressure due to the smaller blood vessel generating a high pressure forcing the liquid into the tube
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