Pex-09-04 Essay

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Name: jason Exercise 9: Renal System Physiology: Activity 4: Solute Gradients and Their Impact on Urine Concentration Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. As filtrate passes through the nephron, the renal process of reabsorption describes You correctly answered: d. the movement of water and solutes from the tubule lumen, into the interstitial space, and, finally, into the peritubular capillaries. 2. The maximum solute concentration refers to the amount of solutes You correctly answered: b. in the interstitial space. 3. Antidiuretic hormone (ADH) affects the permeability of You correctly answered: c. the collecting duct. 4. ADH aids the reabsorption of You correctly answered: a. water. 03/31/14 page 1 Experiment Results Predict Question: Predict Question: What will happen to the urine volume and concentration as the solute gradient in the interstitial space is increased? Your answer : c. The urine volume and concentration will increase. Stop & Think Questions: Why is the solute concentration (mOsm) in the proximal tubule the same as in the blood? You correctly answered: d. Because water and many plasma solutes filter into Bowman's capsule. In the presence of ADH, what component of the tubule fluid moves out of the collecting duct and into the interstitial space? You correctly answered: b. water Experiment Data: Urine Volume 80.57 40.28 26.86 16.86 Urine Concentration 300 600 900 1200 Conc. Grad. 300 600 900 1200 ADH present present present present 03/31/14 page 2 Post-lab Quiz Results You scored 33% by answering 1 out of 3 questions correctly. 1. Tubule fluid osmolarity will always be the greatest in which of these locations? You correctly answered: b. the bottom of the loop of Henle 2. Tubule fluid volume will always be the greatest in which of these locations? Your answer: c. the

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