Q. No.Consider the two statements:
| I: | The process of filtration at Malpighian body is regarded as ultrafiltration. |
| II: | Blood is filtered so finely that all constituents of plasma pass into the lumen of Bowman’s capsule. |
| 1. | Both I and II are correct and II explains I |
| 2. | Both I and II are correct but II does not explain I |
| 3. | I is correct but II is incorrect |
| 4. | I is incorrect but II is correct |
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The reabsorption, from the filtrate, of sodium, glucose and amino acids:
1. involves the Bowman's capsule
2. is restricted to the loop of Henle
3. occurs mainly in the proximal convoluted tubules
4. occurs mainly by osmosis
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Filtration slits in the glomerular membrane are formed by:
1. The capillary endothelial cells
2. The basement membrane
3. The podocyte cells
4. Mesangial cells
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What is the mechanism of reabsorption of glucose in the proximal convoluted tubule of the nephron?
1. Diffusion, depending on plasma glucose concentration
2. An active transport process that is linked to sodium reabsorption
3. An active transport process that is linked to amino acid transport
4. Active transport with no link to the transport of any other substance
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All the following are secreted by the tubules of nephrons except:
| 1. Sodium ions | 2. Potassium ions |
| 3. Uric acid | 4. Hydrogen ions |
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The vascular endothelium of glomerular capillaries, basement membrane, and podocytes in the inner lining of Bowman’s capsule form:
| 1. filtration membrane | 2. juxtaglomerular apparatus |
| 3. Malpighian corpuscle | 4. nephron |
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About what percent of the glomerular ultrafiltrate is reabsorbed by the tubules during urine formation?
| 1. 99% | 2. 70% |
| 3. 50% | 4. 20% |
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Specialized smooth muscle cells mainly in the walls of the afferent arterioles called the Juxtaglomerular cells secrete:
| 1. ADH | 2. angiotensin |
| 3. aldosterone | 4. renin |
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A person has a cardiac output of 6000 ml per minute and 20% of this is received by kidneys. What is the renal plasma flow per minute?
| 1. 1200 ml | 2. 660 ml |
| 3. 400 ml | 5. 120 ml |
Glomerular ultrafiltrate normally does not contain:
| 1. formed elements of the blood | 2. glucose |
| 3. amino acids | 4. electrolytes |
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