Differentiate between ultra filteration and tubular secretion
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Ultrafiltration: The efferent arteriole is narrower than the afferent arteriole. This develops a hydrostatic pressure on the blo7od. Thus, the blood flows through the glomerulus with a great pressure. Due to this pressure, the liquid part of the blood filters out from the glomerulus and passes into the Bowman’s capsule. This filtration under extraordinary force is called ultrafiltration. whereas Tubular secretion: Potassium ions and certain substances like penicillin are passed into the urine through the distal convolutedtubule. The cells of the walls of DCT are involved in bringing potassium ions and other substances back in the renal tubule. This process is known as tubular secretion.
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