The basic functions of human kidneys in the production of urine include all the following except:
1. Glomerular filtration | 2. Tubular reabsorption |
3. Tubular secretion | 4. Erythropoietin production |
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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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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During the concentration of urine, the medullary interstitial osmolality is increased by all the following except:
1. | Solute reabsorption in the ascending limb of the loop of Henle |
2. | Sodium reabsorption in the distal tubule |
3. | Urea reabsorption from the proximal tubule |
4. | Urea recycling between the loop of Henle and the collecting duct |
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A hormone formed in the blood that causes vasoconstriction is:
1. Renin | 2. Aldosterone |
3. Angiotensin | 4. Vasopressin |
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The collecting ducts become permeable to water and urea due to:
1. Aldosterone | 2. Atrial natriuretic peptide |
3. Renin | 4. ADH (vasopressin) |
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Identify the correct statement regarding human kidney function if ADH is not secreted in the body:
1. | Urine will be isoosmotic with plasma. |
2. | PCT will not be able to reabsorb water and sodium. |
3. | The collecting ducts have very low permeability to water. |
4. | The distal tubules secrete water. |
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Increased stretching of the atrial wall, due to increased atrial blood volume, stimulates the release of:
1. aldosterone | 2. ADH |
3. atrial natriuretic hormone | 4. renin |
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ADH will not be secreted due to:
1. ingesting more water than is needed to balance water loss
2. stimulation of hypothalamic osmoreceptors
3. loss of body fluid
4. increased blood osmolarity