Difference Between Osmosis and Dialysis

There are certain processes that occur within the human body and that are necessary for the survival of each one of us. Osmosis, diffusion, respiration… are some of these. Difference Between Osmosis and Dialysis

Osmosis occurs within cells , they absorb and diffuse nutrients passing them through a semi-permeable membrane. The kidney is the organ that performs the important task of maintaining balance in the body by filtering the blood, the fluid in the body, and separating excess water and waste from it. It also works as part of the endocrine system. Dialysis, on the other hand, is a medical procedure that is required when the kidneys are no longer able to function properly. To know more about it, keep reading.

OSMOSIS  Difference Between Osmosis and Dialysis

Osmosis is a type of diffusion, where molecules move through a semi-permeable membrane and become a more concentrated solution of a more dilute solution.

A semi-permeable membrane is a barrier that only allows certain substances to pass through and blocks the passage of all others. A cell wall is a semi-permeable membrane, as it allows water and certain substances diluted in it to pass through. The or osmosis water requires that the substances can pass through the membrane. By means of the transport of substances the concentration of these is equalized on both sides of the membrane.

It is divided into three stages: hypotonic, isotonic and hypertonic. When hypotonic, the external solution is less concentrated than the internal solution, while in hypertonic solutions, the external solution is more concentrated than the internal solution. On the other hand, it is isotonic when the equilibrium is reached between both solutions and they have the same concentration.

Osmosis is used by various cells and organisms in order to achieve balance. Cells also use it to acquire nutrients and energy. Cell membranes act as semi-permeable passageways, allowing large, polar molecules such as ions, proteins, and polysaccharides to pass through; while blocking nonpolar or hydrophobic molecules such as lipids, oxygen, carbon dioxide, nitrogen, nitric oxide …

Osmosis is also the main way that plants acquire water and nutrients necessary from the soil for their survival. The process of absorbing water from the soil is osmosis.


Dialysis is a medical process that helps the kidneys function when they are no longer able to work. The term derives from the Greek word ‘dialusis’ which means ‘dissolution’ It is an artificial replacement that can be gradual or instantaneous.

yuda to separate waste and excess water from the blood. It can also be partially used to treat people who are applicable for a kidney transplant. Also, it is used when a person loses between 85-90% of kidney function.

The purpose of dialysis is to maintain balance in the body when the kidneys cannot. It does this by eliminating waste, salt and excess water, thus preventing it from accumulating in the body. It deals with regulating the level of chemicals and nutrients (potassium, sodium, chloride, calcium, phosphorus, magnesium, and sulfate) in the body and also helps control blood pressure. The kidneys are part of the endocrine system and produce erythropoietin and calcitriol, which help in the production of red blood cells.

The first dialysis machine was developed in 1943 by the Dutch physician Willem Kolff, however, the first success story occurred in 1945. The machine was made using guts, beverage cans, a washing machine, and other items that were available. at that time.

This process uses principles such as diffusion and ultrafiltration of liquid through a semi-permeable membrane. L blood flows on one side of the semipermeable membrane and dialysate flow on the opposite side. The semi-permeable membrane has small holes that allow substances in the blood to pass through it. Once the blood is cleansed, it is then reinserted into the body.

There are five types of dialysis, of which three are primary and two are secondary. The primary ones are hemodialysis, peritoneal dialysis and hemofiltration, while the secondary ones are hemodiafiltration and intestinal dialysis.

In the case of hemodialysis, the patient’s blood is pumped through one compartment of a dialyzer, while the dialyzed substances remain in the other compartment of the device The clean blood is then returned to the body. This is a process that generally takes 3-5 hours and should be done three times a week.

In peritoneal dialysis, blood is cleansed within the body itself through a tube that is placed inside the peritoneal cavity in the abdomen. The cavity is filled with dialyzed substances thanks to a surgically placed catheter, this keeps the arteries and veins clean. The liquid that contains the waste is eliminated through the same catheter.

Each exchange takes about an hour to an hour and a half, and the dialyzer catheter needs to be changed four to five times a day. Hemofiltration is a process similar to hemodialysis, but unlike hemodialysis, it is done through the use of pressure.

See More

Leave a Reply

Your email address will not be published. Required fields are marked *


Back to top button