Q. No.The hormone produced by the adrenal cortex, when stimulated by angiotensin II, that causes increased sodium and water reabsorption in the distal convoluted tubules, is:
1. renin
2. aldosterone
3. antidiuretic hormone
4. cortisol
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Which area actually secretes renin into the blood?
| 1. macula densa | 2. juxtaglomerular apparatus |
| 3. juxtaglomerular cells | 4. cortical nephron |
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The part of the nephron where both hydrogen and potassium ions are secreted into the tubular fluid is the
| 1. Malpighian body | 2. proximal convoluted tubule |
| 3. loop of Henle | 4. distal convoluted tubule |
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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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A series of straight capillaries in the medulla that lie parallel to the loop of Henle are called:
| 1. | arcuate arteries | 2. | efferent arterioles |
| 3. | afferent arterioles | 4. | vasa recta |
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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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The functional unit of the human kidney is the:
| 1. | glomerulus | 2. | Malpighian body |
| 3. | nephron | 4. | medullary pyramids |
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In the male, urethra serves to:
1. transport urine from kidney to bladder
2. transport sperms to ejaculatory ducts
3. store urine and sperms
4. discharge semen and urine
A hormone formed in the blood that causes vasoconstriction is:
| 1. Renin | 2. Aldosterone |
| 3. Angiotensin | 4. Vasopressin |
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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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