Question 1

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

Accepted Answer

Regulation of blood glucose levels

Question 2

A patient presents with high blood potassium ($$K^+) $$levels. Which function of the kidneys is most directly responsible for correcting this imbalance?

Accepted Answer

Regulation of ion levels in the blood

Question 3

Which hormone produced by the kidneys stimulates the production of red blood cells?

Accepted Answer

Erythropoietin

Question 4

Where in the nephron does the majority of tubular reabsorption occur?

Accepted Answer

Proximal convoluted tubule

Question 5

Which of the following substances would normally NOT pass through the glomerular filtration membrane into the nephron?

Accepted Answer

Plasma proteins

Question 6

A patient is found to have glucose in their urine. Which nephron process is most likely impaired?

Accepted Answer

Tubular reabsorption

Question 7

Which structure directly receives urine from the collecting ducts?

Accepted Answer

Minor calyx

Question 8

Which of the following best describes the path of blood flow into and through the nephron?

Accepted Answer

Renal artery → segmental artery → interlobar artery → arcuate artery → cortical radiate artery → afferent arteriole → glomerulus

Question 9

Which of the following is TRUE regarding the location of the kidneys?

Accepted Answer

They are retroperitoneal, located behind the peritoneum

Question 10

Which process in urine formation is responsible for moving substances from the blood into the nephron to be excreted, even if they were not filtered at the glomerulus?

Accepted Answer

Tubular secretion

Question 11

A drug is detected in a patient’s urine. Through which nephron process did it most likely enter the urine if it was not filtered at the glomerulus?

Accepted Answer

Tubular secretion

Question 12

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

Accepted Answer

It increases water reabsorption in the distal convoluted tubule and collecting duct

Question 13

Which of the following is a waste product excreted by the kidneys that results from the breakdown of amino acids?

Accepted Answer

Urea

Question 14

If the glomerular filtration rate (GFR) is measured at $$120 \ \mathrm{mL/min}$$, how much filtrate is produced in one day?

Accepted Answer

$$180 \ \mathrm{L/day}$$

Question 15

Which anatomical feature of the kidney is the entry and exit point for the renal artery, renal vein, and ureter?

Accepted Answer

Renal hilum

Question 16

Which of the following best explains why plasma proteins are not normally found in the urine of a healthy individual?

Accepted Answer

They are too large to pass through the glomerular filtration membrane

Question 17

Which of the following is TRUE about the urethra in males compared to females?

Accepted Answer

It is longer and also transports semen

Question 18

A patient with chronic kidney disease has a buildup of creatinine in their blood. What does this indicate about their glomerular filtration rate (GFR)?

Accepted Answer

Their GFR is decreased

Question 19

Which of the following is the correct sequence for the passage of urine from the nephron to the outside of the body?

Accepted Answer

Collecting duct → minor calyx → major calyx → renal pelvis → ureter → urinary bladder → urethra

Question 20

Which of the following best describes the role of the peritubular capillaries?

Accepted Answer

They surround the nephron tubules and are involved in reabsorption and secretion

Urinary System: Structure, Function, and Urine Formation

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