What is the possible advantage and disadvantage of breathing tract crosses alimentary canal in throat?

Advantages

* Efficient exchange of respiratory gases: The close proximity of the breathing tract and the alimentary canal in the throat allows for efficient exchange of respiratory gases. Oxygen from the air we breathe can diffuse into the bloodstream, while carbon dioxide from the bloodstream can diffuse into the air we exhale.

* Warming and humidifying of inspired air: The air we breathe is warmed and humidified as it passes through the nose and throat, which helps to protect the delicate tissues of the lungs.

* Protection of the lungs from foreign objects: The epiglottis, a flap of tissue that covers the windpipe, helps to prevent food and other objects from entering the lungs.

Disadvantages

* Risk of choking: The close proximity of the breathing tract and the alimentary canal can also lead to choking, if food or other objects become lodged in the throat.

* Spread of infection: Infections of the throat can spread to the lungs, or vice versa.