What is the function of goblet cells, which are sometimes found interspersed throughout pseudostratified and simple columnar epithelium?
A. To provide oxygen to the nearby epithelial cells
B. To produce and secrete mucus
C. To engulf and destroy invading microorganisms
D. To produce new epithelial cells to replace worn out cells
E. To absorb nutrients for the epithelial cells
Answer: B
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