Question 1

Which structure is responsible for filtering blood to form the initial filtrate in the nephron?

Accepted Answer

Glomerulus

Question 2

A patient presents with proteinuria (protein in the urine). Which structure is most likely damaged, allowing proteins to pass into the filtrate?

Accepted Answer

Podocytes

Question 3

Which vessel carries blood away from the glomerulus?

Accepted Answer

Efferent arteriole

Question 4

The nephron loop (loop of Henle) is primarily responsible for which function?

Accepted Answer

Reabsorption of water and sodium

Question 5

Which of the following best describes the path of urine from the renal papilla to the exterior of the body?

Accepted Answer

Renal papilla → minor calyx → major calyx → renal pelvis → ureter → urinary bladder → urethra

Question 6

Which structure acts as the final control point for voluntary urination?

Accepted Answer

External urethral sphincter

Question 7

A blockage in which vessel would most directly reduce blood flow to the glomerulus?

Accepted Answer

Afferent arteriole

Question 8

Which part of the nephron is primarily responsible for the reabsorption of glucose, amino acids, and the majority of ions?

Accepted Answer

PCT (proximal convoluted tubule)

Question 9

Which structure is NOT part of the renal corpuscle?

Accepted Answer

PCT

Question 10

Which of the following best describes the function of the juxtaglomerular apparatus?

Accepted Answer

Regulation of blood pressure and filtration rate

Question 11

A kidney stone lodged in the ureter would most likely cause which of the following symptoms?

Accepted Answer

Pain radiating from the lower back to the groin

Question 12

Which vessel directly receives blood from the arcuate artery?

Accepted Answer

Cortical radiate artery

Question 13

Which of the following is the correct sequence of blood flow through the kidney?

Accepted Answer

Renal artery → segmental artery → interlobar artery → arcuate artery → cortical radiate artery

Question 14

Which structure is responsible for the final concentration of urine before it enters the renal pelvis?

Accepted Answer

Collecting duct

Question 15

Damage to which structure would most likely impair the kidney's ability to regulate sodium and potassium levels?

Accepted Answer

DCT (distal convoluted tubule)

Question 16

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

Accepted Answer

Reabsorption and secretion between blood and the nephron

Question 17

A patient with damage to the internal urethral sphincter would most likely experience which of the following?

Accepted Answer

Involuntary leakage of urine

Question 18

Which structure is the first to receive urine after it leaves the collecting duct?

Accepted Answer

Minor calyx

Question 19

Which of the following is a function of the cortical nephron?

Accepted Answer

Filtration and formation of dilute urine

Question 20

Which of the following best describes the role of the glomerular capsule?

Accepted Answer

Collects filtrate from the glomerulus

Urinary System: Key Terms and Structures

Study Guide - Practice Questions