Which of the following is NOT part of the respiratory system?

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Prepare for the Missouri State CMT Test. Study with comprehensive materials including flashcards and multiple choice questions. Each quiz question provides hints and explanations to ensure you're exam-ready!

Multiple Choice

Which of the following is NOT part of the respiratory system?

Explanation:
The thing being tested is which organ is not part of the respiratory system. The nose helps filter and warm air, the lungs are where gas exchange occurs, and the diaphragm is the main muscle that expands and contracts the chest to move air in and out. The heart, on the other hand, is part of the circulatory system; it pumps blood and works closely with the lungs for gas exchange, but it is not a breathing organ itself.

The thing being tested is which organ is not part of the respiratory system. The nose helps filter and warm air, the lungs are where gas exchange occurs, and the diaphragm is the main muscle that expands and contracts the chest to move air in and out. The heart, on the other hand, is part of the circulatory system; it pumps blood and works closely with the lungs for gas exchange, but it is not a breathing organ itself.

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