Question

respiratory notes review questions

1. what is the main function of the respiratory system?

a) produce red blood cells
b) gas exchange — supply oxygen and remove carbon dioxide
c) circulate nutrients throughout the body
d) control body temperature

Explanation:

The respiratory system's key role is gas exchange. It takes in oxygen ($O_2$) needed for cellular respiration and expels carbon dioxide ($CO_2$) as a waste product. Red blood cells are produced in bone marrow (not respiratory system). Nutrient circulation is the circulatory system's job. Body temperature control involves multiple systems like the integumentary (skin) and nervous systems, not primarily the respiratory system.

Answer:

B. Gas exchange — supply oxygen and remove carbon dioxide