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The Urinary System Chapter 25 EXAM

The Urinary System Chapter 25 EXAM - The Urinary System...

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The Urinary System Chapter 25 Matching Questions Figure 25.1 Using Figure 25.1, match the following: 1) Glomerulus.Answer: C 2) Afferent arteriole.Answer: A 3) Collecting duct.Answer: B 4) Loop of Henle.Answer: E 5) Peritubular capillaries.Answer: D 2 Figure 25.2 Using Figure 25.2, match the following: 6) Structure most closely associated with granular cells.Answer: A 7) Medulla of the kidney.Answer: E 8) Podocyte.Answer: B 9) Is composed of simple squamous epithelium.Answer: A 10) Collecting duct cells.Answer: C 11) Proximal convoluted tubule cells.Answer: EDiff: 1 Page Ref: 965; Fig. 25.5 12) Filtrate at the site of these cells is about the same osmolarity as blood plasma.Answer: EDiff: 2 Page Ref: 966; Fig. 25.5 13) Cells that are the most active in reabsorbing the filtrate.Answer: EDiff: 2 Page Ref: 966; Fig. 25.5 14) Cells that reabsorb virtually all the nutrients.Answer: EDiff: 2 Page Ref: 966; Fig. 25.5 15) Cells that are most affected by ADH.Answer: CDiff: 3 Page Ref: 966; Fig. 25.5 16) Almostnowater is absorbed in these cells.Answer: DDiff: 3 Page Ref: 966; Fig. 25.5 Match the following: A) Site at which most of the tubular reabsorption occurs. B) Blood supply that directly receives substances from the tubular cells. C) Site of filtrate formation. D) Site that drains the distal convoluted tubule. 17) Proximal convoluted tubule.
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18) Glomerulus. 19) Peritubular capillaries 20) Collecting duct Answers: 17) A 18) C 19) B 20) D 4True/False Questions 1) If the GFR is too low, needed substances may pass so quickly through the renal tubules thatthey are not absorbed and instead are lost in the urine.Answer: FALSEDiff: 2 Page Ref: 972 2) In the kidneys, the countercurrent mechanism involves the interaction between the flow of filtrate through the loop of Henle of the juxtamedullary nephrons (the countercurrent multiplier)and the flow of blood through the limbs of adjacent blood vessels (the countercurrentexchanger). This relationship establishes and maintains an osmotic gradient extending from thecortex through the depths of the medulla that allows the kidneys to vary urine concentrationdramatically.Answer: TRUEDiff: 3 Page Ref: 979-982 3) The ureter transports urine from the kidney to the urinary bladder.Answer: TRUEDiff: 1 Page Ref: 985 4) Water reabsorption through the proximal convoluted tubule is termed obligatory waterreabsorption, whereas water reabsorption through the distal convoluted tubule is termedfacultative water reabsorption.Answer: TRUEDiff: 2 Page Ref: 975, 978 5) The position of the kidneys behind the peritoneal lining of the abdominal cavity is describedby the termretroperitoneal.Answer: TRUEDiff: 1 Page Ref: 961 6) The entire responsibility for urine formation lies with the nephron.Answer: TRUEDiff: 1 Page Ref: 964 7) Urine is 95% water by volume.Answer: TRUEDiff: 1 Page Ref: 985 8) The act of emptying the bladder is called voiding.Answer: TRUEDiff: 1 Page Ref: 988 9) Glomerular filtration is an ATP-driven process.Answer: FALSEDiff: 1 Page Ref: 969 5 10) In the absence of hormones, the distal tubule and collecting ducts are relatively impermeableto water.Answer: TRUEDiff: 1 Page Ref: 978 11) The collecting duct is impermeable to water in the presence of ADH.Answer: FALSEDiff: 1 Page Ref: 978
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