Biology-B5-The Kidneys

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  • Created by: tonisha_
  • Created on: 29-01-23 13:59
It is important that water levels?
remain as constant as possible
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Since if the body cells gains or loses too much water?
they dont work efficiently
2 of 55
The control of water levels and mineral ions is called what?
osmoregulation
3 of 55
What are the three types of cells?
hypertonic
isotonic
hypotonic
4 of 55
What is hypertonic?
cells are flaccid
too much water leaving the cell
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What is isotonic?
water leaving and entering is balanced
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What is hypotonic?
cells are turgid
too much water entering cell
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One way our body loses water is by ______ through our_____?
exhaling through our lungs
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Another way is by?
sweating
9 of 55
What three things are lost from the body through sweat?
water
ions
little urea
10 of 55
sweating and exhaling cannot be?
controlled
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The third way of losing water is via the______ in _____?
via the kidneys in urine
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The body can?
control this
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The kidneys are organs of which system?
urinary system
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The blood will enter the kidneys through what?
an artery
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This blood contains the waste product?
urea
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The kidneys will remove the urea as well as excess ____ and ____?
ions and water
17 of 55
This leaves the kidneys as?
urine
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And is stored in?
the bladder
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The blood that contains no?
urea
20 of 55
Will leave through?
a vein
21 of 55
HOW KIDNEYS ADJUST LEVELS OF MOLECULES IN BLOOD
--------------------
Firstly, the blood will pas through?
a capillary
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Small molecules are then _______ _____of the blood?
filtered out
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What four things are filtered out?
water
urea
glucose
ions
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This stage is called?
filtration
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Then all of the glucose?
is reabsorbed
26 of 55
____ ions and _____water is also_____?
some ions and water is reabsorbed
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However it depends on?
the needs of the body
28 of 55
This stage is called?
selective reabsorption
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The urea, excess ions and excess water are then released as?
urine
30 of 55
But stored in?
bladder
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What is the difference in concentration of glucose before and after?
it is the same since the kidneys filter it all out but then reabsorb it all back into blood
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What is the difference in the concentration of ions?
It may be slightly higher or lower depending on needs of the body

all is filtered out
some reabsorbed
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What is the difference in the concentration of urea?
very little to non since its all filtered out of kidneys and none is reabsorbed
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Proteins are long chains of?
amino acids
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When digested, the amino acids pass?
into the blood
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Excess amino acids are broken down into ______ in the_____?
into ammonia in the liver
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This process is called?
deamination
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Ammonia however is very ______ so it is converted to _____ and safely excreted by the kidneys?
very toxic so it is converted to urea
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CONCENTRATION OF URINE
---------------------------
This is controlled by what hormone?
ADH
anti diuretic hormone
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What is a tubule?
a very small tube
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This is released by which gland?
pituitary
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This affects the ________ of kidney ______?
permeability of kidney tubules
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Firstly, the ____ will detect that the water level is too____?
receptor
high
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The ________ centre will receive ______ and coordinate a ______?
coordination centre will receive info and coordinate a response
45 of 55
The pituitary gland will then release _____ ADH?
less
46 of 55
This makes kidney tubules _____ permeable so _____ water is reabsorbed into the ____?
tubules less permeable so less water is reabsorbed into the blood
47 of 55
This means _____ urine is produced?
more
48 of 55
Or a ______ could detect that water levels are too ____?
receptor
low
49 of 55
Coordination centre receives ____ and coordinates ____?
info
response
50 of 55
The pituitary gland will then release?
more ADH into bloodstream
51 of 55
Makes the kidney tubules more?
permeable
52 of 55
Therefore?
more water is reabsorbed into the blood
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This means ____ urine is produced?
less
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This is all part of?
negative feedback
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Other cards in this set

Card 2

Front

Since if the body cells gains or loses too much water?

Back

they dont work efficiently

Card 3

Front

The control of water levels and mineral ions is called what?

Back

Preview of the front of card 3

Card 4

Front

What are the three types of cells?

Back

Preview of the front of card 4

Card 5

Front

What is hypertonic?

Back

Preview of the front of card 5
View more cards

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