Renal System Physiology Physioex

Exercise 9 Renal System Physiology Activity 3 Renal Response to altered Blood Pressure Lab ReportPre-lab Quiz ResultsYou scored 25% by answering 1 out of 4 questions correctly. 1. If every(a) other variables are kept constant, how does the afferent arteriola radius affect the esteem of glomerular filtration (select all(a) that apply)?Your answer b. A decreased afferent arteriola radius will increase the compute of glomerular filtration.Correct answer c. An change magnitude afferent arteriole radius will increase the ordinate of glomerular filtration. . A decreased afferent arteriole radius will decrease the respect of glomerular filtration.2. If all other variables are kept constant, how does the efferent arteriole radius affect the rove of glomerular filtration (select all that apply)?Your answer d. A decreased efferent arteriole radius will decrease the roll of glomerular filtration.Correct answer a. An increased efferent arteriole radius will decrease the rate of g lomerular filtration. b. A decreased efferent arteriole radius will increase the rate of glomerular filtration.3. If all other variables are kept constant, how does argumentation military press affect the rate of glomerular filtration (select all that apply)?Your answer c. If blood nip goes down, the rate of glomerular filtration goes up.Correct answer b. If blood public press goes up, the rate of glomerular filtration goes up. d. If blood pressure goes down, the rate of glomerular filtration goes down.4. In the absence of other nephritic processes (including tube-shaped reabsorption and secretion), more glomerular filtration leads to a larger urine volume.You correctly answered a. trueExperiment ResultsPredict scruple Predict Question What will happen to the glomerular capillary pressure rate and glomerular filtration rate if both of these arteriole radii changes are implemented at the same time with the low blood pressure condition?Your answer b. Glomerular filtration ra te and pressure will rise supra baseline values.Stop & Think QuestionsIf blood pressure were to drop (for example, as the result of blood loss), what changes in the nephron would allow the kidney to maintain ts normal glomerular filtration rate (select all that apply)?Your answer c. afferent arteriole chokepointCorrect answer a. afferent arteriole dilation d. efferent arteriole constriction2. canvas the glomerular filtration rate and glomerular capillary pressure with the baseline values (from the first run), how effective was the increased afferent arteriole radius in compensating for the low blood pressure?Your answer b. The afferent arteriole dilation improved the low glomerular capillary pressure and filtration rate marginally.Correct answer c. The afferent arteriole dilation returned the low glomerular capillary pressure and filtration rate almost to baseline values.3. Comparing the glomerular filtration rate and glomerular capillary pressure with the baseline values (from t he first run), how effective was the decreased efferent arteriole radius in compensating for the low blood pressure?You correctly answered b. The efferent arteriole constriction improved the low glomerular capillary pressure and filtration rate marginally.Experiment DataPost-lab Quiz ResultsYou scored 0% by answering 0 out of 4 questions correctly. 1. If all other variables are kept constant, when blood pressure decreases, glomerular filtrationYour answer b. remains approximately the same.Correct answer c. ecreases.2. If afferent arteriole radius decreases in rejoinder to an increase in blood pressure, then glomerular filtrationYour answer a. increases.Correct answer b. remains approximately the same.3. If all other variables are kept constant, when the efferent arteriole radius decreases, glomerular filtrationYour answer c. decreases.Correct answer a. increases.4. With blood pressure held at a constant value, which of the following combinations will raise the glomerular filtration rate above baseline values? Your answer c. afferent rteriole constriction and efferent arteriole constrictionCorrect answer b. afferent arteriole dilation and efferent arteriole constrictionReview Sheet Results1. List the several mechanisms you have explored that change the glomerular filtration rate. How does from each one mechanism specifically alter the glomerular filtration rate?Your answer Renal mechanisms have effects on water excretion . GFR is large compared to the amount of urine produced. Most water in the filtrate because of renal processes and independent of ADH action2.Describe and explain what happened to the glomerular capillary pressure and glomerular filtration rate when both arteriole radii changes were implemented simultaneously with the low blood pressure condition. How well did the results compare with your prediction?Your answer The simultaneously implementation of both arteriole rates changing caused glomerular filtration rate and low blood pressure conditio ns went above the baseline value.3. How could you adjust the afferent or efferent radius to compensate for the effect of rock-bottom blood pressure on the glomerular filtration rate?Your answer You can co nstrict or amplify them.4. Which arteriole radius adjustment was more effective at compensating for the effect of low blood pressure on the glomerular filtration rate? Explain why you think this difference occurs.Your answer There was a greater increase of glomerular pressure when afferent radius is increased rather than the decrease of the efferent radius.5. In the body, how does a nephron maintain a near-constant glomerular filtration rate despite a endlessly fluctuating blood pressure?Your answer Auto-regulation