A. To pump blood
B. To filter waste
C. To exchange gases
D. To produce hormones
Answer: To exchange gases
What is the main purpose of the respiratory system?
Additional Information: The respiratory system's primary purpose is to facilitate gas exchange, bringing oxygen into the body and expelling carbon dioxide. This process occurs in the lungs, where oxygen is absorbed into the bloodstream, and carbon dioxide is removed, maintaining vital physiological balance.
Subjects: Biology, Science and Technology, General Knowledge