$$GFR = \frac{U_x \times V}{P_x}$$

$$C = \frac{U_x \times V}{P_x}$$

Question 1

Which of the following is NOT a primary function of the urinary system?

Accepted Answer

Production of red blood cells

Question 2

Which layer of the kidney is responsible for filtering blood and forming urine?

Accepted Answer

Renal cortex

Question 3

A patient presents with high levels of glucose in their urine. Which renal process is most likely impaired?

Accepted Answer

Reabsorption in the proximal tubule

Question 4

Which of the following structures is NOT part of the nephron?

Accepted Answer

Renal pelvis

Question 5

Which equation correctly represents the calculation of glomerular filtration rate (GFR)?

Accepted Answer

$$GFR = \frac{U_x 	imes V}{P_x}$$

Question 6

Which of the following best describes the role of antidiuretic hormone (ADH) in the kidneys?

Accepted Answer

Increases water reabsorption in the collecting duct

Question 7

A patient has a renal clearance for substance X of 0 mL/min. What does this indicate about substance X?

Accepted Answer

It is completely reabsorbed

Question 8

Which of the following mechanisms is responsible for the majority of glucose reabsorption in the nephron?

Accepted Answer

Active transport via sodium-glucose cotransporter in the proximal tubule

Question 9

Which of the following statements about the juxtaglomerular apparatus is TRUE?

Accepted Answer

It monitors sodium concentration in the distal tubule

Question 10

If the afferent arteriole of the glomerulus constricts, what is the expected effect on GFR?

Accepted Answer

GFR decreases

Question 11

Which of the following is the correct sequence of urine formation in the nephron?

Accepted Answer

Filtration → Reabsorption → Secretion

Question 12

Which hormone is released in response to low blood pressure and stimulates sodium reabsorption in the distal tubule?

Accepted Answer

Aldosterone

Question 13

A patient with a GFR of 60 mL/min (normal: 125 mL/min) is likely experiencing which condition?

Accepted Answer

Renal failure

Question 14

Which of the following substances is used clinically to measure GFR because it is freely filtered and neither reabsorbed nor secreted?

Accepted Answer

Inulin

Question 15

Which formula is used to calculate renal clearance of a substance?

Accepted Answer

$$C = \frac{U_x 	imes V}{P_x}$$

Question 16

Which of the following is a function of the renin-angiotensin-aldosterone system (RAAS)?

Accepted Answer

Increase blood pressure by promoting sodium reabsorption

Question 17

Which of the following is TRUE regarding tubular maximum (Tm) for glucose?

Accepted Answer

Tm is the maximum rate at which glucose can be reabsorbed

Question 18

Which of the following would most likely increase the glomerular filtration rate (GFR)?

Accepted Answer

Constriction of the efferent arteriole

Question 19

Which of the following is the correct order of structures that urine passes through after leaving the nephron?

Accepted Answer

Collecting duct → Renal pelvis → Ureter → Bladder → Urethra

Question 20

Which of the following best explains why protein is not normally found in urine?

Accepted Answer

Proteins are too large to be filtered through the glomerular membrane

Urinary System Anatomy and Physiology: Study Guide and Objectives

Study Guide - Practice Questions