Câu 23: GED Section 3 Science: Section Three Science

Two main chemicals are responsible for the communication of the brain with the organs you have no conscious control over (heart, digestive system, endocrine system). The chemical norepinephrine helps your body get ready for a fightor- flight action by stirring up energy stores. In contrast, the chemical acetylcholine helps conserve energy by slowing the heart and increasing intestinal absorption. Which of the following situations is least likely to lead to increased levels of norepinephrine?

1. A. being chased by a flesh-eating animal
2. B. running away from someone holding a knife
3. C. petting a rabbit — đáp án hiện tại
4. D. taking an important exam
5. E. going on a first date with someone