Learner Resource 4
Instructions – Print out and cut into strips, giving one strip to each student. 20 strips have been
included – you may need to add more for bigger groups, or give some student 2 strips if your class
is small. Ask who has a strip that says start. Ask that student to read the question on the right hand
side of their strip. The class member with the correct answer should say the answer and then read
their question. This should continue until you get back to the student who started the loop.
This activity requires full concentration and participation of all class members.
Aquaporins
Start. Which blood vessels carry blood to
and from the kidney?
Renal artery and vein
Name the tube that carries urine from the
kidney to the bladder.
Ureter
Name the two main regions within the
kidney.
Cortex and medulla
What is the functional unit within the kidney
producing urine?
The nephron
What are the 3 main processes required for
the production of urine?
Ultra-filtration, selective reabsorption and
osmoregulation
What is the nitrogenous waste product
excreted in urine?
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Urea
What is urea produced from?
Excess amino acids
How is high blood pressure produced within
the glomerulus?
Afferent arteriole is wider than efferent
arteriole
What components of blood do not enter the
Bowman’s capsule?
Blood cells and large blood proteins
List 3 useful substances within the renal
filtrate that need to be reabsorbed.
Glucose, amino acids, salts, water
List substances that are not reabsorbed.
Urea, drugs, alcohol, hormones
How are substances selectively
reabsorbed?
Diffusion and active transport due to the
presence of protein carriers in membranes
of cells lining the proximal tubule
How is water reabsorbed back into the blood
from the renal filtrate?
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By osmosis
Name the hormone that controls the amount
of water reabsorption.
Anti diuretic hormone
What is the role of the loop of Henle?
To produce a region of low water potential (a
high salt concentration) within the medulla.
What is the effect of increasing ADH levels
on the nephron?
The walls of the ascending limb become
more water-permeable so more water is
reabsorbed preventing it being lost from the
body in urine.
Name the proteins that increase in number
in the collecting duct cell membranes to
enable more water reabsorption.
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