Produce a diagram explaining the reabsorption of Ca2+ and Mg2+ at the proximal tubule of a...

Produce a diagram explaining the reabsorption of Ca2+ and Mg2+ at the proximal tubule of a nephron. Are these processes examples of paracellular or transcellular transport? What is the driving force that maintains these transport mechanisms?

Expert Solution

answer) the absorption of calcium and magnesium is dependent on the water moecules and sodium molecules and its a passive process that it means it cross membrane thus it is a paracellular transport.

CALCIUM: so the driving force is sodium and water for calcium absorption in PCT. And mainly occured by passsive diffusion and a solvent drag.around 80% of calcium is reabsobrd in the prximal oarrt of nephron. it is a two step process which calium entry from the tubular fluid across the apical membrane and exit through the basolateral membrane.

MAGNESIUM:it is also absorbed by a paracellular transport and it is driven by sodium and water.

Sydney Mullin answered 1 year ago

Indicate the functions of the proximal convoluted tubule, the loop of Henle, the distal convoluted tubule,...

Indicate the functions of the proximal convoluted tubule, the loop of Henle, the distal convoluted tubule, and the collecting ducts and how is the fluid passes through each one.

Compare the proximal with the distal segments of the nephrons in terms of reabsorption and excretion

21. Bicarbonate is reabsorbed into the epithelial cells of the proximal convoluted tubule as ________________. HCO3-...

21. Bicarbonate is reabsorbed into the epithelial cells of the proximal convoluted tubule as ________________. HCO3- CO2 H2CO3 Carbonic anhydrase 22. Loop diuretics block the Na+/ 2Cl-/K+ cotransporter on the ascending loop of henle. How does this reduce water reabsorption? By preventing the reabsorption of sodium ions, water is not reabsorbed from the ascending loop of henle It causes hyperkalcemia which stimulates Aldosterone secretion, thereby, indirectly causing the excretion of sodium, potassium and water. It abolishes and/or reduces the osmotic...

Osmotic movement of water by proximal convoluted tubule cells is referred to as ______ (three words),...

Osmotic movement of water by proximal convoluted tubule cells is referred to as ______ (three words), whereas _____ (three words) is when water is reclaimed from filtrate in the collecting duct.

During the process of turning filtrate into urine, Group of answer choices the proximal tubule and...

During the process of turning filtrate into urine, Group of answer choices the proximal tubule and Loop of Henle are responsible for reabsorbing most of the water and Na+. Water is reabsorbed only in the collecting ducts. The Loop of Henle decreases filtrate volume by removing water from the filtrate in the ascending limb. Secretion of H+ occurs only in the proximal tubule.

How could the fluid that passes through, the proximal convoluted tubule, the loop of Henle, the...

How could the fluid that passes through, the proximal convoluted tubule, the loop of Henle, the distal convoluted tubule and the collecting conductors be?

1. In the proximal tubule under normal conditions, 50% of glucose is reabsorbed back into the...

1. In the proximal tubule under normal conditions, 50% of glucose is reabsorbed back into the peritubular capillaries. a. true b. false 2. The transport maximum (Tmax) is the upper limit of reabsorption of glucose and amino acids due to the saturation of carrier systems that return these substances back to the blood. a. true b. false 3. Which of the following is an effect of aldosterone? MIGHT BE C*** a. excretion of sodium ions b. conservation of potassium ions...

Question

Produce a diagram explaining the reabsorption of Ca2+ and Mg2+ at the proximal tubule of a...

Solutions

Expert Solution

Related Solutions