What components make up the respiratory system?

The components that make up the respiratory system include the nose, mouth, throat (pharynx), lungs, and the muscles involved in breathing. The primary function of the respiratory system is to facilitate gas exchange, allowing oxygen to enter the body and carbon dioxide to be expelled.

The nose and mouth serve as the entry points for air, where it is filtered, moistened, and warmed. The throat provides a passage for air to move from these entry points into the trachea and eventually to the lungs. The lungs house the alveoli, where the actual exchange of gases occurs. Additionally, the diaphragm and intercostal muscles play a crucial role in breathing by expanding and contracting to allow air to flow in and out of the lungs. Thus, this option accurately encompasses the elements essential for the respiratory function and highlights the system's structure.