To identify: The initial composition of the solute in the hemodialysis dialysate that would be suitable in replacement of the reabsorption and the secretion of the solutes in a functional kidney.
Concept introduction: The composition of the filtrate in the kidney includes glucose, urea, vitamins, salt ions, amino acids and the drugs. The absorption the glucose takes place in the proximal tubules. The reabsorption of salts takes place in the distal tubules. The process of the countercurrent ion transport takes place inside the nephrons of the kidney.
The two processes are the active transport and the passive transport inside the kidney cells. The aquaporin channels are present in the collecting duct, which transport the water and the ions in the body. The substances in the replaced fluid should contain glucose, salt ions like sodium and potassium. The concentration of the urea should be less in the dialysate fluid.
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CAMPBELL BIOLOGY,VOL.II >CUSTOM<
- Which of the following is an example of autoregulation of kidney function? a. The RAAS regulates Na1 by secreting renin when blood pressure or blood volume decreases. b. The ADH system regulates water balance by decreasing water reabsorption and increasing excretion of salt. c. Receptors in the juxtaglomerular apparatus detect a higher salt concentration in the distal convoluted tubule and trigger constriction of the afferent arteriole to reduce glomerular filtration rate. d. ANF is released by the kidney to increase renin release. e. Angiotensin II lowers blood pressure by constricting arterioles.arrow_forwardIs this corrarrow_forwardDon't copy from Googlearrow_forward
- . If a person takes a loop diuretic, for example furosemide, for a prolonged period of time, what effectwill it have on the osmotic gradient in the renal medulla? Will this effect tend to increase or decreaseurine output?arrow_forwardThe loop of Henle in the mammalian renal tubule…arrow_forward4, H+ secretion in the renal tubule happens by Multiple Choice It follows a negative ion like Cl- or PO43- H+/HCO3- exchanger in the basolateral membrane Na+/H+ exchanger in the apical membrane It first combines with HCO3- and is then regenerated in the tubular fluidarrow_forward
- ASAP HELParrow_forwardQ5: Approximately 50% of the furosemide given is eliminated by secretion in the kidney. Which transporters below are most likely facilitators of the renal elimination of furosemide? HN- NH2 HQarrow_forwardSodium ion reabsorption from the filtrate into peritubular blood across the cells of this component of the nephron (marked by the black asterisk) Choose from the following: (A) is regulated by the binding of the hormone aldosterone (B) is not regulated by any hormone, but is determined by sodium ion concentration and filtrate flowarrow_forward
- 24arrow_forward30, With respect to renal autoregulation, myogenic mechanism refers to Multiple Choice both glomerulus increase of blood flow and macula densa secreting renin are correct ability of macula densa to sense a increase in Na+ content in tubular fluid and secrete renin in response ability of a muscle to contract reflexively without nervous stimulation to adjust blood vessel diameter ability of glomerulus to increase blood flow and increase filtration ratearrow_forwardNa+ ions are actively transported out of the tubules to help set up the countercurrent multiplier. Which of the following are sites of active Na+ ion transport in the nephron?arrow_forward
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