Final answer:
In addition to carbon dioxide and water vapor, the respiratory system can remove trace amounts of other gases like neon and helium. The kidneys within the excretory system filter blood for waste removal, while the respiratory system maintains acid-base balance through carbon dioxide regulation.
Step-by-step explanation:
Besides carbon dioxide and water vapor, the other waste gases that are removed through the human respiratory system include a very small amount of other gases like neon and helium. However, these gases are present in much lower concentrations than carbon dioxide and have less biological significance. The primary role of the respiratory system is to facilitate gas exchange, bringing in oxygen for cellular respiration and expelling carbon dioxide, which is a byproduct of this metabolic process.
The excretory system also plays a crucial role in waste removal, with the kidneys filtering out various waste products from the blood to be excreted as urine. The lungs play their part by removing gaseous waste such as carbon dioxide, and the skin also eliminates waste in the form of sweat. Maintaining the body's acid-base balance is another important function of the respiratory system, which is achieved through the regulation of carbon dioxide levels.