Download PHED 6360--Exercise Physiology

Exercise and Heat Stress Practice Test #1
Multiple Choice: 50 pts. each
6. The filtered materials that enter Bowman's Space
1. Which of the following is NOT part of the Nephron?
enter via:
 Glomerulus
 A. Renal whole blood
 Proximal tubule
 B. Renal plasma
 Bowmans Capsule
 C. Red blood cells
 Renal Artery
 D. Answers A & B
 All of the above are part
 E. Answers C & B
 None of the above are part
 F. Answers A & C
 G. All of the above
2. A functioning kidney does which of the following?
 H. None of the above
 A. Helps in gluconeogenisis
 B. Secretes Aldosterone
7. Renal blood flow in the typical adult is:
 C. Removes waste from the blood
 A. 20 - 25 percent of cardiac output
 D. Answers A & B
 B. 1.1 L/min.
 E. Answers C & B
 C. 5 L/min
 F. Answers A & C
 D. Answers A & B
 G. All of the above
 E. Answers C & B
 H. None of the above
 F. Answers A & C
 G. All of the above
3. The blood supply leaves the glomerulus through which
 H. None of the above
of the following?
 Afferent arterioles
8. Which of the following affect GFR of a substance?
 Afferent venules
 Renal Blood Flow
 Efferent arterioles
 Blood Volume
 Efferent venules
 Plasma Concentration
 All of the above
 All of the above
 None of the above
 None of the above
4. Which of the following is a catalyst for angiotensin?
 Renin
 Aldosterone
 Erythropoietin
 All of the above catalyze angiotensin
 None of the above catalyze angiotensin
5. The glomerulus filters which of the following:
 A. Proteins
 B. Water
 C. Glucose
 D. Answers A & B
 E. Answers C & B
 F. Answers A & C
 G. All of the above
 H. None of the above
9. Which of the following is the greatest area for water
reabsorption in the nephron?
 Distal Tubule
 Proximal Tubule
 Descending limb of henle’s loop
 Collecting Duct
 None of the above
10. Which of the following must be true to determine
actual GFR?
 Solutes must be secreted by the tubules
 Solutes must be freely filterable
 Solutes must be reabsorbed by the tubules
 Answers A & B
 Answers C & B
 Answers A & C
 All of the above
 None of the above
11. The greatest loss of daily water when at rest is from
which of the following:






Urine
Feces
Sweat
Pulmonary ventilation
Insensible perspiration
None of the above
12. Which of the following defines a transport mechanism
that requires energy?
 Diffusion
 Osmosis
 Na-K pump
 Facilitated diffusion
 None of the above
13. Which of the following describes the interstitial tissue
as fluid moves down the descending limb of Henle’s
loop?
 A. Sodium concentration increases
 B. Sodium osmolarity increases
 C. Sodium concentration decreases
 D. Answers A & B
 E. Answers C & B
 F. Answers A & C
 G. All of the above
 H. None of the above
14. Where does the final portion of water reabsorption
occur in the kidney?
 Collecting ducts
 Proximal tubule
 Distal tubule
 Ascending limb of Henle’s loop
 None of the above
15. What is the highest concentration that can be
achieved in the kidney’s interstitial tissue?
 600 mOsm
 7000 mOsm
 1400 mOsm
 2200 mOsm
 None of the above
Short Answers: 150 pts. each
27. Where are the glomeruli located in the kidney?
Define the following: 100 pts. each
16. Insensible water loss –
17. Radiation –
18. Diuretic—
19. Homeostatic—
20. Conduction—
21. Vasa recta—
22. Osmolarity—
23. Tubular secretion—
24. Filtration fraction--
25. Clearance--
26. Fractional excretion--
33. Is it possible for a substance to be found in the urine that is not filtered by the glomerulus? Please
explain.
34. What is the clearance rate of glucose for a healthy adult? Please explain.
35. Describe autoregulation and how it affects secretion/reabsorption.
Essay/Graphs/Long answers: 275 pts. each
39. The desert rat’s urine crystalizes when it is excreted; explain what kidney factors may cause this, and explain why humans
can’t do this.