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Exercise 9 - Renal System Physiology: Activity 1

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Exercise 9 - Renal System Physiology: Activity 1
Name: Luis A. Cruz
Exercise 9: Renal System Physiology: Activity 1: The Effect of Arteriole Radius on Glomerular Filtration Lab Report
Pre-lab Quiz Results
You scored 100% by answering 5 out of 5 questions correctly.
1. There are approximately __________ nephrons in a healthy human kidney.
You correctly answered: c. 1 × 106
2. Which of the following lists the anatomical structures in the correct order as they are encountered by the blood and filtered fluid during the process of filtration?
You correctly answered: d. afferent arteriole, glomerular capillary, Bowman's capsule
3. Bowman's capsule is connected to the beginning of the
You correctly answered: b. proximal convoluted tubule.
4. The functional unit of the kidney is the
You correctly answered: c. nephron.
5. During the process of renal reabsorption, fluid and solutes move from the
You correctly answered: b. renal tubule into the peritubular capillaries.

04/19/14

page 1

Experiment Results
Predict Question:
Predict Question 1: What will happen to the glomerular capillary pressure and filtration rate if you decrease the radius of the afferent arteriole?
Your answer : b. Both pressure and filtration rate will decrease.
Predict Question 2: What will happen to the glomerular capillary pressure and filtration rate if you increase the radius of the afferent arteriole?
Your answer : a. Both pressure and filtration rate will increase.
Predict Question 3: What will happen to the glomerular capillary pressure and filtration rate if you decrease the radius of the efferent arteriole?
Your answer : a. Both pressure and filtration rate will increase.
Stop & Think Questions:
Caffeine consumption leads to increased urine formation. From the results in this experiment thus far, you might propose that You correctly answered: d. caffeine dilates the afferent arteriole.
When you are in the desert and dehydrating, which of the following arteriole combinations would benefit you the most?
You

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