Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Q: The endocrine system produces hormones to regulate growth, development, and reproduction.

A: Which human organ system produces hormones to regulate growth, development, and reproduction?
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Q: The cell starting meiosis is called a primary oocyte.

A: The cell starting meiosis is called a what?
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Q: The stomach mucosa’s epithelial lining consists only of surface mucus cells, which secrete a protective coat of alkaline mucus.

A:
The stomach mucosa’s epithelial lining consists only of surface mucus cells, which secrete a protective coat of what?
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