The human respiratory system’s main job is gas exchange: taking in essential oxygen for cells and expelling waste carbon dioxide, a process driven by breathing (inhalation/exhalation). Beyond breathing, it also enables speech (vocalization), smell (olfaction), filters air, and helps regulate blood pH, working with the circulatory system to deliver oxygen and remove CO2 throughout the body.
Description
The human respiratory system’s main job is gas exchange: taking in essential oxygen for cells and expelling waste carbon dioxide, a process driven by breathing (inhalation/exhalation). Beyond breathing, it also enables speech (vocalization), smell (olfaction), filters air, and helps regulate blood pH, working with the circulatory system to deliver oxygen and remove CO2 throughout the body.
