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IMF-017-01-0001-en	Blood leaves the glomerular capillary tuft through which vessel, and which two capillary beds can that vessel form?	It leaves through an efferent arteriole, which forms peritubular capillaries around cortical tubules or vasa recta descending into the medulla.	Integrated Medical Foundations; chapter 17, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: df7f2d06dd2fb16204cbcac48ef462b5f02d72d17abd43e959f7cc1818f892d3; editorial review pending	imf lang::en chapter::017 module::017-01 review::pending
IMF-017-01-0002-en	Why is the renal medulla vulnerable to hypoxic injury despite the kidney's high total blood flow?	Medullary flow is low, which preserves the osmotic gradient, while oxygen demand there is driven strongly by active sodium transport.	Integrated Medical Foundations; chapter 17, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: df7f2d06dd2fb16204cbcac48ef462b5f02d72d17abd43e959f7cc1818f892d3; editorial review pending	imf lang::en chapter::017 module::017-01 review::pending
IMF-017-01-0003-en	Which three structures does filtrate cross in the glomerular filtration barrier?	Fenestrated endothelium, glomerular basement membrane, and podocyte slit structures.	Integrated Medical Foundations; chapter 17, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: df7f2d06dd2fb16204cbcac48ef462b5f02d72d17abd43e959f7cc1818f892d3; editorial review pending	imf lang::en chapter::017 module::017-01 review::pending
IMF-017-01-0004-en	Which two pressures oppose glomerular filtration?	Hydrostatic pressure in Bowman's space and plasma-protein oncotic pressure.	Integrated Medical Foundations; chapter 17, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: df7f2d06dd2fb16204cbcac48ef462b5f02d72d17abd43e959f7cc1818f892d3; editorial review pending	imf lang::en chapter::017 module::017-01 review::pending
IMF-017-01-0005-en	Filtration rate is the product of which two quantities, and what does the second reflect?	Net filtration pressure multiplied by the filtration coefficient, which reflects permeability and surface area.	Integrated Medical Foundations; chapter 17, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: df7f2d06dd2fb16204cbcac48ef462b5f02d72d17abd43e959f7cc1818f892d3; editorial review pending	imf lang::en chapter::017 module::017-01 review::pending
IMF-017-01-0006-en	How do moderate and severe efferent arteriolar constriction differ in their effect on filtration?	Moderate constriction can raise glomerular pressure while reducing renal blood flow, whereas severe constriction eventually reduces filtration as oncotic pressure rises and flow falls.	Integrated Medical Foundations; chapter 17, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: df7f2d06dd2fb16204cbcac48ef462b5f02d72d17abd43e959f7cc1818f892d3; editorial review pending	imf lang::en chapter::017 module::017-01 review::pending
IMF-017-01-0007-en	In tubuloglomerular feedback, what does the macula densa sense, and how do high and low delivery differ in effect?	It senses sodium chloride delivery: high delivery promotes afferent constriction and reduced renin, while low delivery promotes renin and adjustments that support filtration and sodium retention.	Integrated Medical Foundations; chapter 17, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: df7f2d06dd2fb16204cbcac48ef462b5f02d72d17abd43e959f7cc1818f892d3; editorial review pending	imf lang::en chapter::017 module::017-01 review::pending
IMF-017-01-0008-en	What drives apical cotransport in the proximal tubule, and why is reabsorption there approximately iso-osmotic?	Sodium gradients maintained by the basolateral sodium-potassium pump drive it, and water follows the reabsorbed solute.	Integrated Medical Foundations; chapter 17, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: df7f2d06dd2fb16204cbcac48ef462b5f02d72d17abd43e959f7cc1818f892d3; editorial review pending	imf lang::en chapter::017 module::017-01 review::pending
IMF-017-01-0009-en	Why does proximal handling of filtered bicarbonate reclaim it without creating new bicarbonate?	Secreted hydrogen combines with filtered bicarbonate, which becomes carbon dioxide through carbonic anhydrase and is then regenerated into the bicarbonate returned to blood.	Integrated Medical Foundations; chapter 17, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: df7f2d06dd2fb16204cbcac48ef462b5f02d72d17abd43e959f7cc1818f892d3; editorial review pending	imf lang::en chapter::017 module::017-01 review::pending
IMF-017-01-0010-en	What happens when the filtered glucose load exceeds the proximal transport maximum?	Glucose appears in urine and causes osmotic diuresis.	Integrated Medical Foundations; chapter 17, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: df7f2d06dd2fb16204cbcac48ef462b5f02d72d17abd43e959f7cc1818f892d3; editorial review pending	imf lang::en chapter::017 module::017-01 review::pending
IMF-017-01-0011-en	Which findings follow loss of proximal tubular reabsorptive capacity?	Bicarbonate wasting, phosphate loss, glucose in urine despite normal blood glucose, and aminoaciduria.	Integrated Medical Foundations; chapter 17, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: df7f2d06dd2fb16204cbcac48ef462b5f02d72d17abd43e959f7cc1818f892d3; editorial review pending	imf lang::en chapter::017 module::017-01 review::pending
IMF-017-01-0012-en	How do the thin descending limb and the thick ascending limb differ in permeability, and what does each do to tubular fluid?	The thin descending limb is highly water permeable and concentrates the fluid, while the thick ascending limb reabsorbs sodium, potassium and chloride but is relatively water impermeable, so it dilutes the fluid.	Integrated Medical Foundations; chapter 17, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: df7f2d06dd2fb16204cbcac48ef462b5f02d72d17abd43e959f7cc1818f892d3; editorial review pending	imf lang::en chapter::017 module::017-01 review::pending
IMF-017-01-0013-en	What generates the large corticomedullary gradient, and what do the vasa recta contribute?	Repeated flow through opposing limbs multiplies a small transverse gradient, with urea recycling contributing, while vasa recta act as countercurrent exchangers that supply tissue and limit washout.	Integrated Medical Foundations; chapter 17, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: df7f2d06dd2fb16204cbcac48ef462b5f02d72d17abd43e959f7cc1818f892d3; editorial review pending	imf lang::en chapter::017 module::017-01 review::pending
IMF-017-01-0014-en	What do principal cells do with sodium and potassium, and how does aldosterone change this?	They reabsorb sodium through epithelial sodium channels and secrete potassium, and aldosterone increases both by changing channel and pump expression and activity.	Integrated Medical Foundations; chapter 17, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: df7f2d06dd2fb16204cbcac48ef462b5f02d72d17abd43e959f7cc1818f892d3; editorial review pending	imf lang::en chapter::017 module::017-01 review::pending
IMF-017-01-0015-en	How does antidiuretic hormone concentrate urine, and what is excreted without its effect?	It inserts aquaporin two channels into collecting-duct apical membranes so water follows the medullary gradient, and without its effect the ducts stay less permeable and dilute urine is excreted.	Integrated Medical Foundations; chapter 17, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: df7f2d06dd2fb16204cbcac48ef462b5f02d72d17abd43e959f7cc1818f892d3; editorial review pending	imf lang::en chapter::017 module::017-01 review::pending
IMF-017-01-0016-en	Which distal processes generate new bicarbonate and permit excretion of non-volatile acid?	Distal acid secretion, led by alpha intercalated cells, together with ammonium handling.	Integrated Medical Foundations; chapter 17, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: df7f2d06dd2fb16204cbcac48ef462b5f02d72d17abd43e959f7cc1818f892d3; editorial review pending	imf lang::en chapter::017 module::017-01 review::pending
IMF-017-01-0017-en	Define clearance, and state for which substance clearance equals the glomerular filtration rate.	It is the virtual plasma volume cleared of a substance per unit time, and it equals filtration rate for a freely filtered marker that is neither reabsorbed nor secreted.	Integrated Medical Foundations; chapter 17, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: df7f2d06dd2fb16204cbcac48ef462b5f02d72d17abd43e959f7cc1818f892d3; editorial review pending	imf lang::en chapter::017 module::017-01 review::pending
IMF-017-01-0018-en	Why does creatinine clearance, whether measured or estimated, have limitations as a filtration marker?	Creatinine is produced from muscle and is filtered but also partly secreted.	Integrated Medical Foundations; chapter 17, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: df7f2d06dd2fb16204cbcac48ef462b5f02d72d17abd43e959f7cc1818f892d3; editorial review pending	imf lang::en chapter::017 module::017-01 review::pending
IMF-017-01-0019-en	Why can a small rise in serum creatinine mislead in a person with a low baseline value?	It can represent a substantial loss of filtration.	Integrated Medical Foundations; chapter 17, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: df7f2d06dd2fb16204cbcac48ef462b5f02d72d17abd43e959f7cc1818f892d3; editorial review pending	imf lang::en chapter::017 module::017-01 review::pending
IMF-017-01-0020-en	How is renal plasma flow estimated, and how is filtration fraction calculated?	By using a substance that is filtered and strongly secreted so most of the delivered amount is excreted; filtration fraction is filtration rate divided by renal plasma flow.	Integrated Medical Foundations; chapter 17, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: df7f2d06dd2fb16204cbcac48ef462b5f02d72d17abd43e959f7cc1818f892d3; editorial review pending	imf lang::en chapter::017 module::017-01 review::pending
IMF-017-01-0021-en	Which renal process does each of red-cell casts, white-cell casts, and granular muddy casts support?	Red-cell casts support glomerulonephritis, white-cell casts suggest renal inflammation, and granular muddy casts support tubular injury.	Integrated Medical Foundations; chapter 17, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: df7f2d06dd2fb16204cbcac48ef462b5f02d72d17abd43e959f7cc1818f892d3; editorial review pending	imf lang::en chapter::017 module::017-01 review::pending
IMF-017-01-0022-en	What must be assessed and monitored during erythropoiesis-stimulating treatment, and why?	Iron status, haemoglobin and blood pressure, because excessive correction increases vascular risk.	Integrated Medical Foundations; chapter 17, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: df7f2d06dd2fb16204cbcac48ef462b5f02d72d17abd43e959f7cc1818f892d3; editorial review pending	imf lang::en chapter::017 module::017-01 review::pending
IMF-017-01-0023-en	Where is vitamin D converted to its active form, and what stimulates that conversion?	In proximal tubular cells, under stimulation by parathyroid hormone and low phosphate.	Integrated Medical Foundations; chapter 17, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: df7f2d06dd2fb16204cbcac48ef462b5f02d72d17abd43e959f7cc1818f892d3; editorial review pending	imf lang::en chapter::017 module::017-01 review::pending
IMF-017-01-0024-en	How do loop diuretics and thiazide-type drugs differ in site of action and in their effect on calcium excretion?	Loop diuretics block sodium-potassium-chloride transport in the thick ascending limb and increase calcium and magnesium excretion, while thiazide-type drugs block distal sodium-chloride transport and reduce calcium excretion.	Integrated Medical Foundations; chapter 17, TTS module 1; https://theisegoria.github.io/medical-textbook/integrated-medical-foundations-expanded-english.md; module SHA256 at export: df7f2d06dd2fb16204cbcac48ef462b5f02d72d17abd43e959f7cc1818f892d3; editorial review pending	imf lang::en chapter::017 module::017-01 review::pending