10 name the segments of the nephron distal to the

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10- Name the segments of the nephron distal to the renal corpuscle, and state the functions of each. Proximal convoluted tubule : Reabsorbs all the useful organic substrates from the filtrate. Nephron loop : Reabsorbs over 90 percent of the water in the filtrate. Distal convoluted tubule : Secretes wastes into the tubular fluid that were not filtered or reabsorbed. 11- What is the function of the juxtaglomerular complex? The juxtaglomerular complex secretes the enzyme renin and the hormone erythropoietin. 12- Using arrows, trace a drop of blood from its entry into the renal artery until its exit by a renal vein. Renal artery - segmental arteries- interlobar arteries- arcuate arteries- cortical radiate arteries- afferent arterioles- glomerulus- venules- cortical radiate veins- arcuate veins- interlobar veins- renal vein. 13- Name and define the three distinct processes involved in the production of urine. Processes in urine production are: Filtration : The selective removal of large solutes and suspended materials from a solution based on size; requires a filtration membrane and hydrostatic pressure, as provided by gravity or by blood pressure. Reabsorption: The removal of water and solute molecules from the filtrate after it enters the renal tubules. Secretion : The transport of solutes from the peritubular fluid, across the tubular epithelium, and into the tubular fluid. 14- What are the primary effects of angiotensin II on kidney function and regulation?
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In peripheral capillary beds , angiotensin II causes powerful vasoconstriction of precapillary sphincters, increasing pressures in the renal arteries and their branches. At the nephron , angiotensin II causes the efferent arteriole to constrict. increasing glomerular pressures and filtration rates. At the PCT , it stimulates the reabsorption of sodium ions and water. In the CNS ,
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  • Spring '17
  • ditmore
  • renal corpuscle, renal pelvis

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