Osmosis and diffusion play key roles in the kidneys by facilitating the movement of substances like water, nutrients, and waste products. Through osmosis, water and nutrients are transferred from blood in the kidneys into urine for excretion or delivery to cells. Diffusion allows for the movement of toxins, drugs, and other harmful substances out of the blood and into urine. If osmosis and diffusion failed, the kidneys would be unable to filter wastes and regulate water levels, leading to a buildup of toxins in the blood and improper fluid balance in the body.

1. Explain the Importance of Osmosis and
Diffusion in the Kidneys
Where would they be moved from/to?
What would be the consequences if osmosis/diffusion failed in the
kidneys?
What substances would be moved through osmosis or diffusion in the
kidneys?
What is the role of diffusion/osmosis in kidneys?

2. What substances would be moved through osmosis or diffusion
in the kidneys and where would they be moved to/from
 In the body the kidneys main function is to produces urine for it to be put into the
bladder. Every day, the kidneys filter a little bit of blood to produce urine, from wastes
and extra fluid. The urine flows from the kidneys to the bladder two muscles called
ureters, one on each side of the bladder.
 The kidneys help to produce urine from water that has been put into the body. The
organ uses osmosis so that it can be transferred into the cells for energy for the body.
Osmosis only applies to the movement of water into or out of a cell. The definition of
osmosis is the movement of water molecules from a dilute solution to a
more concentrated solution. So when the water goes into the kidneys it turned into
urine and then pushed into the bladder , this is where urine is stored. Osmosis is a
chemical process by which water is transported into and out of cells, it also is a process
where nutrients are delivered to the cells from the water that is in the kidneys, which
is the main substances which would be moved through osmosis in the kidneys.
 When the water is passed into the kidneys it is produced into urine which is then
transferred to the bladder which it is then stored. Then from the bladder it is then
transferred out of the body.

3. What is the role of diffusion/osmosis in the
kidneys?
When you drink water or any liquid, the kidneys are what filter out the liquid.
Giving your body the nutrients that it needs and getting rid of all the toxins that
your body doesn’t need. This is done through osmosis. The liquid that you drink
will go to your kidneys, your kidneys then filter out the nutrients from the drink
through osmosis and deliver it to your blood, your blood will then deliver the
nutrients to the different parts of your body that need it. The toxins in the drink
that your body doesn’t need will then go through to your bladder and will leave
your body via urination.
The kidneys help to clean out your blood. They do this through diffusion. The
atoms from harmful substances in your body such as drugs, pesticides and food
additives. These atoms will filter through to your kidneys via diffusion and will
be collected with the excess liquid that your body doesn’t need. This will also
come out of your body via urination.

4. What would be the consequences if osmosis/diffusion
failed in kidneys?
Each of our kidney’s contain over one million microscopic filters called nephrons.
Every nephron is made of a tubule and is responsible for ‘cleaning’ the blood by
removing urea and excess water and mineral ions.
Will not be able to filter out small molecules from the blood.
All of the glucose which was originally filtered out will not be allowed back in.
Would not be able to maintain a constant water level in the blood plasma that
they body needs.
The urea and excess water and ions would not be able to continue along the
nephron tubule as urine, urine which would usually pass down to the bladder,
would not be able too without osmosis or diffusion in kidneys.