The human kidney has many functions in the
body, but two of it's most important are
maintaining the blood balance and removal of
toxins from the blood. The blood balance
maintained is the acidity, salt concentrations,
and metabolite levels in the blood. Likewise, the
kidney cleanse toxins (from outside the body, such
as alcohol or pollution; as well as natural waste
products from inside the body)from the
bloodstream, to protect the body and keep it
functioning smoothly. If the kidneys are not
functioning correctly, it is a serious threat to a
persons life, as waste products and toxins will
build up in the blood, and the blood's natural
balance of acids and salts will go out of
homeostasis, the natural equilibrium.When this
happens, modern medicine offers several
life-saving techniques to help perform the
kidney's function, collectively known as renal
replacement therapy, or more commonly as dialysis.
In these techniques, the patient's blood is
filtered of toxins, salts, and wastes either
outside the body (Hemodialysis) or using a regular
injection and removal of a special fluid into the
abdominal cavity(Peritoneal dialysis). In both
cases, the techniques rely upon the process of
dialysis, where a molecule at a high concentration
(like high salt levels in the blood) will pass
through a semi-permeable membrane (like a very
fine mesh) to a fluid with a lower concentration.
This keeps the concentrations of toxins in the
patient's blood low, keeping them alive.
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