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Which of the following is a function of the respiratory system? 

Which of the following correctly describes the modifications in the mucosa of the small intestines? 

Which of the following muscles is necessary for ventilation? 

What effect does the sympathetic nervous system have on the bronchioles? 

What is another name for the pharyngeal tonsils in the nasopharynx? 

Bonus: What is another name for the gut brain? What is unique about it? 

Which of the following would happen if respiratory rate increased? 

Which of the following is a normal breathing rate for a typical healthy adult? 

What correctly describes the function of cilia AND mucus? 

Match the functions with the digestive organ.