Use reasoning to lead to the answer of the following question:
Passage: Food from the stomach is allowed into the duodenum through the pylorus by a muscle called the pyloric sphincter.\n\nQuestion: Based on this passage, the terminal part of the stomach that opens into the duodenum is the?

pylorus
This is the relevant information: Food from the stomach is allowed into the duodenum through the pylorus by a muscle called the pyloric sphincter.

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The answer: pylorus