Video Transcript
The kidneys filter out waste
products from the blood. In what substance are these waste
products excreted from the body?
The kidneys are important organs in
the excretory system, which functions to remove waste products from our body. The primary role of the kidneys is
to filter the blood. In fact, together, the kidneys can
filter around 180 to 200 liters of blood a day. Most people have two kidneys, but a
person can survive with only one. This means kidneys can be donated
to people in need by living donors.
As the kidneys filter the blood,
they remove waste products like urea and excess water, forming urine in the
process. This removal of waste products and
formation of urine is important to maintain pH levels, ion levels, and the balance
of fluids in the body. Once the blood has been filtered
and only useful products remain, it moves out of the kidneys via the renal vein. The waste products removed from the
blood will be transported via the ureter in the form of urine. This urine is taken to the
bladder. Here, it is stored until it is
ready to be excreted from the body.
Using what we now know about the
kidneys and the excretory system, let’s take a look back at our question. The waste products filtered from
the blood by the kidneys are excreted as urine.
