In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.

Q: Question: The outer surface of the heart changes from positive to negative during what? Answer: depolarization

A: The outer surface of the heart changes from positive to negative during depolarization.
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Q: Question: What is the most abundant element in the universe? Answer: hydrogen

A: Hydrogen is the most abundant element in the universe.
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Q: Question: About one-fourth of the blood pumped with each heartbeat enters arteries serving what organs of digestion? Answer: intestines

A:
About one-fourth of the blood pumped with each heartbeat enters arteries serving intestines organs of digestion.
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