The trachea, nose, lungs, and pharynx are part of which body system?

The trachea, nose, lungs, and pharynx are key components of the respiratory system, which is responsible for the exchange of gases—primarily oxygen and carbon dioxide—between the body and the environment. The nose filters, warms, and moistens the air we breathe, while the pharynx serves as a pathway for both air and food. The trachea, or windpipe, is a tube that connects the pharynx and larynx to the lungs, allowing air to pass through. The lungs are the primary organs of respiration where gas exchange occurs through alveoli. Each of these structures works together to facilitate breathing and ensure that oxygen reaches the bloodstream while carbon dioxide is expelled from the body. The respiratory system's main function is crucial for sustaining life through efficient gas exchange.