Match the following renal blood vessels with their correct description A

Match the following renal blood vessels with their

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Match the following renal blood vessels with their correct description. A) efferent arteriole B) peritubular capillary C) glomerulus D) afferent arteriole E) vasa recta 15) Constriction of this vessel by intrinsic or extrinsic mechanisms decreases glomerular filtration rate. Diff: 5 Page Ref: 512 16) Substances that are reabsorbed from the proximal tubule enter this blood vessel. Diff: 4 Page Ref: 512 17) Filtration occurs across this capillary bed. Diff: 3 Page Ref: 512 18) After blood is filtered in the renal corpuscle, the blood continues moving through this blood vessel to another capillary bed. Diff: 3 Page Ref: 512 19) This capillary bed dips down into the renal medulla with the loop of Henle. Diff: 3 Page Ref: 512 Answers: 15) D 16) B 17) C 18) A 19) E Match the cell type to its location or function. A) macula densa cells B) podocytes C) granular cells D) mesangial cells 20) These are modified smooth muscle cells around the glomerulus that contract to decrease the surface area of the glomerulus available for filtration. Diff: 4 Page Ref: 519 21) These are epithelial cells of Bowman's capsule that form part of the filtration barrier. Diff: 4 Page Ref: 515 22) These cells of the afferent arteriole secrete renin. Diff: 4 Page Ref: 512 23) These cells of the distal tubule secrete a paracrine in response to changes in the filtrate flow rate. Diff: 4 Page Ref: 512 Answers: 20) D 21) B 22) C 23) A 24
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Match each of the following with the correct equation. A) renal blood flow B) filtration fraction C) excretion rate D) clearance E) filtered load 24) GFR/renal plasma flow Diff: 5 Page Ref: 517 25) GFR × plasma concentration Diff: 4 Page Ref: 517 26) Excretion rate/plasma concentration Diff: 5 Page Ref: 526 27) Urine concentration × urine flow rate Diff: 5 Page Ref: 527 28) (Urine concentration × urine flow rate)/plasma concentration Diff: 5 Page Ref: 527 29) (Clearance of PAH)/(1 - hematocrit) Diff: 5 Page Ref: 528 Answers: 24) B 25) E 26) D 27) C 28) D 29) A 25
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18.4 Essay Questions 1) The vasculature of the kidneys is quite unique in its organization. This organization has consequences for the control of the renal vasculature. Describe the vasculature of the kidneys, including the consequences of the high resistance of the efferent arteriole.
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