Question 1

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

Accepted Answer

Production of digestive enzymes

Question 2

Which structure is responsible for conducting urine from the kidneys to the urinary bladder?

Accepted Answer

Ureter

Question 3

The right kidney is positioned slightly lower than the left kidney. Which anatomical structure is primarily responsible for this difference?

Accepted Answer

Presence of the liver

Question 4

Which of the following correctly describes the flow of blood through the kidney, starting from the renal artery?

Accepted Answer

Renal artery → Segmental arteries → Interlobar arteries → Arcuate arteries → Cortical radiate arteries → Afferent arterioles → Glomerular capillaries

Question 5

Which layer of connective tissue directly surrounds the kidney and provides physical protection?

Accepted Answer

Fibrous capsule

Question 6

A patient presents with proteinuria (protein in the urine). Which structure in the nephron is most likely malfunctioning?

Accepted Answer

Glomerular filtration barrier

Question 7

Which of the following best describes the function of the descending limb of the nephron loop?

Accepted Answer

Reabsorption of water into the bloodstream

Question 8

Which hormone is released by the juxtaglomerular complex and is involved in the regulation of blood pressure?

Accepted Answer

Renin

Question 9

Which of the following is TRUE regarding the histology of the urinary bladder?

Accepted Answer

The mucosa is lined by transitional epithelium

Question 10

Which of the following best explains why elderly individuals are more prone to urinary incontinence?

Accepted Answer

Loss of muscle tone in urethral sphincters

Question 11

A blockage in the minor calyx of the kidney would directly prevent urine from draining into which structure next?

Accepted Answer

Major calyx

Question 12

Which of the following is a distinguishing feature of juxtamedullary nephrons compared to cortical nephrons?

Accepted Answer

Their capsule is located near the border of the cortex and medulla

Question 13

Which of the following best describes the role of the collecting duct in the nephron?

Accepted Answer

It makes final adjustments to urine concentration

Question 14

Which of the following is the correct order of urine flow from the nephron to the exterior of the body?

Accepted Answer

Collecting duct → Papillary duct → Minor calyx → Major calyx → Renal pelvis → Ureter → Urinary bladder → Urethra

Question 15

Which of the following statements about the urethra is TRUE?

Accepted Answer

The male urethra is subdivided into prostatic, membranous, and spongy regions

Question 16

Which of the following best describes the urine storage reflex?

Accepted Answer

It increases sympathetic activity, inhibiting detrusor muscle and stimulating sphincter contraction

Question 17

A patient with a spinal cord injury loses voluntary control over urination. Which structure is most directly affected?

Accepted Answer

External urethral sphincter

Question 18

Which of the following is TRUE regarding the filtration barrier in the renal corpuscle?

Accepted Answer

It consists of five layers, including the endothelial surface layer and podocyte filtration slits

Question 19

Which of the following best explains why the ascending limb of the nephron loop is impermeable to water?

Accepted Answer

It is specialized for active transport of sodium and chloride ions

Urinary System: Structure, Function, and Histology

Study Guide - Practice Questions