physiology homework 7

physiology homework 7 - (2 points 1 A kidney stone lodges...

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Unformatted text preview: (2 points) 1. A kidney stone lodges in a ureter, blocking the flow of urine out of the kidney. What effect will this have on glomerular filtration rate? Be specific as possible. (2 points) 2. The drug Ouabain is a poison that inhibits the action of the Na + /K + pump. What effect will this drug have on the ability of the nephron to reabsorb amino acids? Why? (2 points) 3. Vitamin C is a water-soluble vitamin that is filtered by the glomerulus and reabsorbed in the proximal convoluted tubule. Explain why it theoretically makes more sense to take one 500 mg vitamin C pill two times a day (a least several hours between pill ya’ll) than taking one 1000-mg vitamin C pill once a day. 4. Glucose actively transported across the apical membrane by a sodium-linked active transport. (Glucose cotransported with sodium ions from the tubular fluid into the epithelial cell. Glucose is now concentrated inside the epithelial cell. Because of this, glucose is now transported by a carrier protein that is located on the basolateral membrane, down its concentration gradient, into...
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This note was uploaded on 03/30/2010 for the course BIO 42202 taught by Professor Sanders during the Spring '10 term at Carnegie Mellon.

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