GENERAL HISTOLOGY

EXCRETORY SYSTEM

KIDNEY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is a dialyzer?
A
A machine that pumps fluid into the blood
B
A machine through which blood and dialysis fluid are pumped, separated by a semi-permeable membrane
C
A machine that replaces ‘dirty’ blood with ‘clean’ blood
D
A machine that filters blood
Explanation: 

Detailed explanation-1: -The HD machine is used to deliver dialysis in uremic patients. It essentially pumps the dialysate as well as the patient’s blood through a dialyzer. The blood and dialysate are separated from each other by a semipermeable membrane, permitting solute and water transfer as governed by the laws of physics.

Detailed explanation-2: -One needle will slowly remove blood and transfer it to a machine called a dialyser or dialysis machine. The dialysis machine is made up of a series of membranes that act as filters and a special liquid called dialysate. The membranes filter waste products from your blood, which are passed into the dialysate fluid.

Detailed explanation-3: -Hemodialysis-or kidney dialysis-is a medical treatment that mimics the kidneys by using semipermeable membranes to filter out waste. In the dialysis process, waste-containing blood is pumped from the patient and through a dialyzer that contains semipermeable membranes.

Detailed explanation-4: -The blood and dialysis fluid move in opposite directions across the membrane (a counter current system ) in order to maintain concentration gradients all the way along. The clean blood is returned to the patient and the waste dialysis fluid is disposed of.

Detailed explanation-5: -The dialyzer, or filter, has two parts, one for your blood and one for a washing fluid called dialysate. A thin membrane separates these two parts. Blood cells, protein and other important things remain in your blood because they are too big to pass through the membrane.

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