Order the parts of a nephron.
Reveal answer
- Bowman's capsule
- proximal convoluted tubule
- loop of Henle
- distal convoluted tubule
- collecting duct
Key words: loop of Henle
3(i) EXCRETION · RECALL
3.24B Structure of a nephron
18 recall questions · Biology only (B): not in Science (Double Award). Answer from memory, reveal the answer, then rate yourself. Ratings stay on this device.
Ratings are saved in this browser on this device, under a KS4 key kept separate from International A Level recall. Written answers are temporary and cleared when you leave the page. Use Reset to clear the ratings on this device.
What is the capillary knot in the capsule called?
Reveal answer
The glomerulus.
Key words: glomerulus
Where is glucose reabsorbed?
Reveal answer
In the proximal convoluted tubule.
Key words: proximal
Which part of the nephron does ADH act on?
Reveal answer
The collecting duct.
Key words: collecting duct
Why is urea concentrated in urine?
Reveal answer
Water reabsorbed, urea not → concentration rises.
Key words: water · reabsorbed
Why no protein in filtrate?
Reveal answer
Protein molecules too large → cannot pass through capillary wall.
Key words: large
What is meant by the term nephron?
Reveal answer
Microscopic functional unit of a kidney.
Key words: nephron
What is meant by the term glomerulus?
Reveal answer
Capillary knot where ultrafiltration occurs.
Key words: glomerulus
What is meant by the term Bowman’s capsule?
Reveal answer
Cup-shaped nephron region receiving glomerular filtrate.
Key words: Bowman’s capsule
What is meant by the term collecting duct?
Reveal answer
Tube receiving filtrate from nephrons and adjusting water reabsorption.
Key words: collecting duct
Nephron regions and roles: for Bowman’s capsule + glomerulus, give the position in route and the main role.
Reveal answer
Position in route: Start. Main role: Ultrafiltration.
Key words: Bowman’s capsule + glomerulus
Nephron regions and roles: for Proximal convoluted tubule, give the position in route and the main role.
Reveal answer
Position in route: After capsule. Main role: Most selective reabsorption, including glucose.
Key words: Proximal convoluted tubule
Nephron regions and roles: for Loop of Henle, give the position in route and the main role.
Reveal answer
Position in route: Between convoluted regions. Main role: Builds medullary concentration gradient.
Key words: Loop of Henle
Nephron regions and roles: for Distal convoluted tubule, give the position in route and the main role.
Reveal answer
Position in route: Before collecting duct. Main role: Further regulated ion/water handling.
Key words: Distal convoluted tubule
Nephron regions and roles: for Collecting duct, give the position in route and the main role.
Reveal answer
Position in route: Final shared tube. Main role: ADH-regulated water reabsorption.
Key words: Collecting duct
True or false, and why? “The glomerulus is a kidney tubule.”
Reveal answer
False. It is a capillary network inside Bowman’s capsule.
True or false, and why? “Each collecting duct belongs to only one nephron.”
Reveal answer
False. A collecting duct receives fluid from several nephrons.
True or false, and why? “Urine flows through renal blood vessels.”
Reveal answer
False. Filtrate follows nephron tubules; blood remains in vessels.