Excretory System(Urinary System) in Humans Video Lecture | Science Class 7

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the urinary system is also known as the
renal system at a consists of the
kidneys the ureters the bladder and the
urethra your kidneys are being shaped
organs that are about the same size to
compute the mouse to find your kidneys
put your hands on your lower back and
slide them up until you feel your room
your kidneys are just behind a layer of
muscle there
or your blood flows through your kidneys
400 times a day in order to filter out
the waste however they also have other
roles as explained in the video what is
homeostasis keeping your body balanced
is very important on the urinary system
plays an important role in this it keeps
the water levels ions such as potassium
sodium calcium magnesium and phosphate
pH and blood pressure as close to
constant as possible the blood goes into
the kidneys via the renal artery it is
then forced into a million small
filtering units called nephrons waste is
then removed and close down the reaches
to the urinary bladder the clean blood
then leads the kidneys via the renal
vein and can return to the body the
liquid that connects in the bladder is
called the urine
it contains Europe which is a waste
product from the breakdown of the excess
protein
it also contains excess water that the
body doesn't need along for some ions
like sodium and potassium did you know
yo gladder can hold up to 800
milliliters of urine there are two
little stinkers that control when to
release your urine from the batter the
first one opens up automatically when
the batter starts to get full luckily we
have voluntary control over the second
one so we can hold on that extra bit
longer if we need sometimes your kidneys
can fail a long-term complication
associated with diabetes and blood
pressure is kidney failure this is
obviously not good as waste pulled up in
the blood very quickly if this happens
we will need to go to hospital regularly
and go on a dialysis machine
dialysis does the same job as your
kidneys filtering the waste out of the
blood and balancing
and ions hopefully at some stage you
will be able to have a kidney transplant
the best thing about kidneys is that you
actually only need one to function so a
healthy person can donate one of these
views and you can both function normally
magic to learn more about how Kiwis
remove Europe from the body watch the
following video
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