renal 1

3/27/24, 12:27 AM PhysioEx Exercise 9 Activity 1 https://media.pearsoncmg.com/bc/bc_0media_ap/physioex/10/ex9/act1/ 1/4 PhysioEx Lab Report Exercise 9: Renal System Physiology Activity 1: The Effect of Arteriole Radius on Glomerular Filtration Name: c Date: 27 March 2024 Session ID: session-d7263dbb-89c8-186a-4cd9-bb6795af44ff Pre-lab Quiz Results You scored 0% by answering 0 out of 5 questions correctly. Experiment Results Predict Questions There are approximately __________ nephrons in a healthy human kidney. You did not answer this question. Correct answer: 1 × 10 1 6 Which of the following lists the anatomical structures in the correct order as they are encountered by the blood itself during the process of filtration? You did not answer this question. Correct answer: afferent arteriole, glomerular capillary, efferent arteriole. 2 Bowman's capsule is connected to the beginning of the You did not answer this question. Correct answer: proximal convoluted tubule. 3 The functional unit of the kidney is the You did not answer this question. Correct answer: nephron. 4 During the process of renal reabsorption, fluid and solutes move from the You did not answer this question. Correct answer: renal tubule into the peritubular capillaries. 5

3/27/24, 12:27 AM PhysioEx Exercise 9 Activity 1 https://media.pearsoncmg.com/bc/bc_0media_ap/physioex/10/ex9/act1/ 2/4 Stop & Think Questions Experiment Data Afferent Radius (mm) Efferent Radius (mm) Beaker Press. (mm Hg) Glomerular Press. (mm Hg) Glom. Filt. Rate (ml/min) Urine Volume (ml) 0.50 0.45 90 55.08 124.99 200.44 0.45 0.45 90 51.54 81.06 179.88 0.40 0.45 90 48.52 43.66 143.91 0.35 0.45 90 46.16 14.35 76.33 0.55 0.45 90 58.94 172.86 212.87 0.60 0.45 90 62.88 221.69 220.74 0.50 0.45 90 55.08 124.99 200.44 0.50 0.40 90 56.10 137.69 227.49 0.50 0.35 90 56.84 146.82 247.96 0.50 0.30 90 57.34 152.96 262.23 Predict Question 1: What will happen to the glomerular capillary pressure and filtration rate if you decrease the radius of the afferent arteriole? You did not answer this question. 1 Predict Question 2: What will happen to the glomerular capillary pressure and filtration rate if you increase the radius of the afferent arteriole? You did not answer this question. 2 Predict Question 3: What will happen to the glomerular capillary pressure and filtration rate if you decrease the radius of the efferent arteriole? You did not answer this question. 3 Caffeine consumption leads to increased urine formation. From the results in this experiment thus far, you might propose that You did not answer this question. Correct answer: caffeine dilates the afferent arteriole. 1 When you are in the desert and dehydrating, which of the following arteriole combinations would benefit you the most? You did not answer this question. Correct answer: afferent constriction and efferent dilation. 2

3/27/24, 12:27 AM PhysioEx Exercise 9 Activity 1 https://media.pearsoncmg.com/bc/bc_0media_ap/physioex/10/ex9/act1/ 4/4 Describe the effect of decreasing the afferent arteriole radius on glomerular capillary pressure and filtration rate. How well did the results compare with your prediction? You did not answer this question. 4 Describe the effect of increasing the afferent arteriole radius on glomerular capillary pressure and filtration rate. How well did the results compare with your prediction? You did not answer this question. 5 Describe the effect of decreasing the efferent arteriole radius on glomerular capillary pressure and filtration rate. How well did the results compare with your prediction? You did not answer this question. 6 Describe the effect of increasing the efferent radius on glomerular capillary pressure and filtration rate. You did not answer this question. 7