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12 Cards in this Set
- Front
- Back
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Which portions of the nephron are in the renal cortex?
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The Renal corpuscle, proximal convoluted tubule, distal convoluted tubule, and the proximal portions of the loop of henle, and the collecting duct are all in the renal cortex
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Why don't plasma proteins pass into the capsular space under normal circumstances?
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They don't pass through because they are to big to pass through the pores of the glomerulus.
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Damage to which part of the nephron would interfere with the control of blood pressure?
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Damage to the juxtaglomerular apparatus would interfere with hormonal control of blood pressure.
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What nephron structures are involved in filtration?
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Capillaries within the Glomerulus
Lamina densa Podocytes |
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What occurs when the plasma concentration of a substance exceeds its transport maximum?
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When reaching its maximum the excess is not reabsorbed but excreted within the urine.
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How would a decreased in blood pressure affect the GFR?
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This would decrease the blood hydrostatic pressure within the glomerulus and hence decrease the GFR.
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Obstruction of a ureter by a kidney stone would interfere with the flow of urine between which two points?
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The kidneys (renal Pelvis) and the urinary bladder.
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The ability to control the micturition reflex depends on your ability to control which muscle.
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you must be able to control your external urethral sphincter. which is formed by the urogenital diaphragm.
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What effect would increased amounts of aldosterone have on the K+ concentration of urine?
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With increased amounts of aldosterone, you would have increased amounts of k+ secretion within the urine. also you would have more Na+ retention.
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What effect would a decrease in the Na+ concentration of filtrate have on he pH of tubular fluid?
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Na+ is a contertransport with H+ so if there is no Na+ the H+ would stay within the nephron or tubular fluid, so the tubular fluids pH would go down.
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How would the lack of juxtamedullary nephrons affect the volume and osmotic concentration of urine?
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Without that there would be no large osmotic gradient in the medulla. so the kidneys would not be able to form concentrated urine.
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Why does a decrease in the amount of Na+ in the distal convoluted tubule lead to an increase in blood pressure?
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When Na+ is low within the tubule it stimulates cells to release renin. renin activates angiotensin, and this activation brings about an increase in blood pressure.
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