EXCRETORY SYSTEM
KIDNEY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What type of membrane separates a patients blood from the dialysis fluid and will allow small molecules to diffuse down their concentration gradient but not blood cells or large molecules?
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Permeable
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Impermeable
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Porous
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Partially permeable
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Explanation:
Detailed explanation-1: -The blood and dialysis fluid are separated only by a thin wall, called a semipermeable membrane. This membrane allows particles that the body needs to get rid of to pass through it, but doesn’t let important parts of the blood (e.g. blood cells) pass through.
Detailed explanation-2: -Dialysis is a classic laboratory technique that relies on selective diffusion of molecules across a semi-permeable membrane to separate molecules based on size.
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