Kidney Quiz
Questions: 16 · 10 minutes
1. A tissue sample contains several renal corpuscles. From which kidney region was it taken?
Minor calyx
Renal papilla
Renal cortex
Renal pelvis
2. Which structure normally provides the main anatomical barrier limiting the filtration of blood cells and large plasma proteins?
The wall of the proximal tubule
The epithelium of the renal pelvis
The wall of the collecting duct
The glomerular filtration barrier
3. Why is the right kidney usually positioned slightly lower than the left kidney?
The right ureter is substantially shorter
The liver occupies space above the right kidney
The spleen pushes the left kidney downward
The bladder pulls the right kidney toward the pelvis
4. Which description best distinguishes the thick ascending limb from the descending limb of the nephron loop?
It reabsorbs salts but is relatively impermeable to water
It is highly permeable to water and concentrates tubular fluid
It filters blood cells from the glomerular capillaries
It carries finished urine from the kidney to the bladder
5. After entering the kidney, the renal artery divides into segmental arteries. Which arteries come next in the usual branching sequence?
Arcuate arteries
Cortical radiate arteries
Interlobar arteries
Afferent arterioles
6. During dehydration, antidiuretic hormone increases water reabsorption by causing which change?
Widening the ureter to accelerate urine flow
Closing filtration slits between podocytes
Adding aquaporin-2 water channels to collecting-duct principal cells
Removing sodium transporters from the proximal tubule
7. Where are the kidneys located relative to the lining of the abdominal cavity?
Between the lungs and the diaphragm
Within the peritoneal cavity beside the small intestine
Inside the pelvic cavity below the bladder
Behind the peritoneum on the posterior abdominal wall
8. Urine exits a renal pyramid at its papilla. Which structure receives it next?
Minor calyx
Major calyx
Renal vein
Ureter
9. A fall in renal perfusion triggers renin release. Which cells release it?
Podocytes surrounding glomerular capillaries
Juxtaglomerular granular cells in the afferent arteriole wall
Principal cells lining the collecting duct
Transitional epithelial cells in the renal pelvis
10. Podocytes form filtration slits around glomerular capillaries. They make up which part of the renal corpuscle?
Visceral layer of Bowman's capsule
Glomerular basement membrane
Parietal layer of Bowman's capsule
Juxtaglomerular apparatus
11. Imaging shows a stone in the kidney's funnel-shaped collecting region immediately before the ureter. Where is the stone?
Renal cortex
Renal column
Renal capsule
Renal pelvis
12. A vessel carrying blood directly into a glomerulus becomes obstructed. Which vessel is affected?
Afferent arteriole
Efferent arteriole
Peritubular capillary
Renal vein
13. As filtrate descends into the increasingly concentrated renal medulla, which process normally occurs in the thin descending limb of the nephron loop?
Active secretion of large proteins into the filtrate
Salt is actively pumped out while water remains trapped
Water leaves the tubule by osmosis
Filtrate drains directly into a minor calyx
14. After fluid crosses the glomerular filtration barrier, where does it enter first?
Proximal convoluted tubule
Capsular space of Bowman's capsule
Collecting duct
Minor calyx
15. A surgeon approaches the renal hilum from front to back. Which major structure is normally encountered first?
Renal pelvis
Renal vein
Renal artery
Ureter
16. Which sequence correctly traces urine after it leaves a collecting duct and continues through the kidney's drainage structures?
Major calyx → papillary duct → minor calyx → renal pelvis
Papillary duct → major calyx → minor calyx → renal pelvis
Minor calyx → papillary duct → renal pelvis → major calyx
Papillary duct → minor calyx → major calyx → renal pelvis