Monday, January 30, 2012

Not donuts....

...red blood cells in hypernatremia.
What is hypernatremia, you ask?
A deficiency of free water relative to sodium, I answer.
The cell membrane is permeable to free water; when the plasma becomes hypertonic (excess salt), the water inside the cell leaks out though osmosis, causing the cell to shrink.
And why is this a problem, I ask?
OXYGEN, you answer!

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