1. You are studying the transport of amino acids across the intestinal epithelium. You set up an in-vitro system (see diagram below) that has a layer of intestinal epithelium separating two chambers. You can alter the contents of the two chambers and you can also remove and test samples of […]

9. Describe the role of transporter proteins with regard to nutrient movement. 10. Describe ion movement through or between the cell membranes into the interstitial fluid. 1. a. What determines the direction of water movement? b. Why does increased water reabsorption affect ion and urea movement? Reabsorption 2. Identify reabsorption […]

Benzyl penicillin is absorbed from the human digestive tract by a H+/penicillin symporter that cotransports these 2 species in a 1:1 ratio from the intestinal lumen into the brush border epithelial cells. If the pH of the intestine is 6.2, what pH would have to be established inside the epithelial […]

1) Summarize the major contributing factors leading to Parkinson’s disease 2) Summarize the major contributing factors leading to Alzheimer’s disease 3) Briefly explain the role of acetlycholinesterase inhibitors in impulse transmission process. 4) Explain why current strategies for the treatment of Parkinson’s disease are directed at increasing dopaminergic activity in […]