Jeopardy
Biology 12:
Urinary System
The Kid
Knee
Ephron’s
Nephron
Making
Urine
Making
More
Urine
YES!
More
Water!
I Gotta Go!
NOW!!
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THE KID KNEE! 100
Urine collects here in the kidney

Renal pelvis

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THE KID KNEE! 200
This artery carries blood to the kidney

The renal artery

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THE KID KNEE! 400
These carry urine from the kidney to the
urinary bladder

Ureters

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THE KID KNEE! 600
This process carries urine down the ureter

Peristalsis

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THE KID KNEE! 800
These are located in the urinary bladder and
trigger urination

Stretch receptors

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THE KID KNEE! 1000
Trace a urea molecule and a glucose
molecule from the renal artery to the
urethra/renal vein
 UREA: Renal artery, afferent arteriole,
glomerulus, Bowmen’s capsule, PCT, LOH, DCT,
collecting duct, ureter, urinary bladder, urethra

GLUCOSE:
renal artery, afferent arteriole,
glomerulus, Bowmen’s capsule, PCT, efferent
arteriole, renal vein
EPHRON’S NEPHRON! 100
This is a delicate ball of capillaries

Glomerulus

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EPHRON’S NEPHRON! 200
This structure starts in the renal cortex,
goes into the renal medulla but goes
back to the renal cortex

Loop of Henle

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EPHRON’S NEPHRON! 400
This the network of capillaries that are
branched from the efferent arteriole

Peritubular capillaries

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EPHRON’S NEPHRON! 600
These 3 structures are only found in the
renal cortex

Bowmen’s capsule, PCT and DCT

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EPHRON’S NEPHRON! 800
Many nephrons join to form one of these

Collecting duct
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EPHRON’S NEPHRON! 1000
These parts of a nephron are thicker
due to the abundance of transport
proteins in the lining of the tubules

PCT, DCT and last portion of the
ascending LOH

Board
MAKING URINE! 100
Pressure filtration occurs between these
two structures

Glomerulus and Bowmen’s capsule

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MAKING URINE!
200
These _________ molecules make up
the ________ inside the nephron

Small, filtrate

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MAKING URINE! 400
This molecule is required during the
process of selective re-absorption,
without it, re-absorption would not
happen

ATP

Board
MAKING URINE! 600
These are an example of molecules that
are reabsorbed that do not require
ATP

Water, Cl- (they follow the Na+ as its
being pumped out of the PCT)

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MAKING URINE! 800
Water passes through the ________
portion of the LOH by ___________.

Descending, osmosis

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MAKING URINE! 1000
The filtrate in the descending LOH
becomes “salty” for these reasons

- loss of water (osmosis) due to going
into an hypertonic environment (the
renal medulla)

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MAKING MORE URINE! 100
The descending LOH is permeable to
____ and the ascending LOH is
permeable to ____

Water, Na+

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MAKING
MORE URINE! 200
This molecule is necessary for tubular
secretion to occur

ATP

Board
MAKING
MORE URINE! 400
Blood pH adjustments occur

DCT

Board
MAKING
MORE URINE! 600
If blood has a low pH what will happen
to H+ and HCO3- re-absorption into the
blood?

HCO3- absorption will go up and H+
will go down

Board
MAKING
MORE URINE! 800
The ascending LOH moves Na+ out of
the filtrate by _______ and _______

Diffusion, active transport

Board
MAKING
MORE URINE! 1000
Its necessary to use active transport to
pump Na+ out of the filtrate in the
ascending LOH for this reason.

The Na+ concentration in the filtrate is
greater (compared to the Na+ concentration
in the blood) at the bottom of the LOH, but
lessens as it ascends the LOH. So Na+
requires pumps to move out of the filtrate
as the gradient itself no longer enough
 Board
YES! MORE WATER! 100
Water re-absorption occurs the most in
this portion of the kidney

Renal medulla

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YES! MORE WATER! 200
In these portions of the nephron water is reabsorbed

Collecting duct, descending LOH and PCT

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YES! MORE WATER! 400
ADH secretion from the ________, which is
triggered by _________, and acts on the
_______

Posterior pituitary, lower blood volume,
collecting duct

Board
YES! MORE WATER! 600
Higher levels of ADH do this to the volume of
urine

Decrease it

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YES! MORE WATER! 800
Alcohol does this to ADH secretion and as
a result does this to urine volume

Inhibits, increases

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YES! MORE WATER! 1000
If blood pressure drops due to low Na+
levels this happens

Aldosterone is released from the adrenal
cortex  causes an increase in Na+ reabsorption (and K + excretion) in the DCT 
causes more water re-absorption in the
collecting duct  less urine and increased
blood pressure  aldosterone release stops

Board
I GOTTA GO! NOW!! 100
Sodium retention occurs here in the
nephron

Ascending LOH
Board
I GOTTA GO! NOW!! 200
Coffee is a diuretic because is does this

Increases blood volume by causing
water retention which increases
pressure filtration  more urine

Board
I GOTTA GO! NOW!! 400
Finding glucose in the urine indicates
this

Possible diabetes; greater urine flows
as less water is re-absorbed

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I GOTTA GO! NOW!! 600
This molecule is maximally filtered and
reabsorbed

Glucose

Board
I GOTTA GO! NOW!! 800
Urea is made by the ______ but excreted by
the ______

Liver, kidney

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I GOTTA GO! NOW!! 1000
How does the hypothalamus function in
urine formation

Low levels of blood volume  cause the
hypothalamus to secrete ADH  causes the
posterior pituitary to release ADH into the
blood  causes collecting duct to increase
water re-absorption  increases blood volume
so hypothalamus stops ADH production
(NEGATIVE FEEDBACK)

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