a: mucous lining of the small intestine ~
b: a window screen
What:
"The function of the mucous lining of the small intestine is like a window screen which lets air in but keeps bugs out. It also resembles the skin, in that it sloughs off a layer of cells naturally every 3 to 5 days and grows new cells to keep the lining semi-permeable. "
Useful?
Writer: Not Stated
LCC:
Where:
Date: Jan 26 2015 7:38 PM
# 7150 Critique Analogy