Plasma resembles the filtrate produced in the glomerulus except for the presence of
A
Glucose
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B
Amino-acids
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C
Proteins
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D
Chlorides
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Solution
The correct option is C Proteins The blood is filtered by nephrons, the functional units of the kidney. Each nephron begins in a renal corpuscle, which is composed of a glomerulus enclosed in a Bowman's capsule. Cells, proteins, and other large molecules are filtered out of the glomerulus by a process of ultrafiltration, leaving an ultrafiltrate that resembles plasma (except that the ultrafiltrate has negligible plasma proteins) to enter Bowman's space. Filtration is driven by Starling forces. The ultrafiltrate is passed through, in turn, the proximal convoluted tubule, the loop of Henle, the distal convoluted tubule and a series of collecting ducts to form urine.