3 Functions of Respiratory System
Homeostasis of blood pH (r.r)Gas exchangeSpeech
The respiratory system is responsible for performing several vital functions in the human body. Here are three primary functions of the respiratory system:
1. Gas Exchange: The respiratory system’s primary function is to exchange gases between the body and the environment. The lungs absorb oxygen from the air and expel carbon dioxide, which is a waste product. Oxygen is essential for the body’s cells to function, and carbon dioxide can be toxic if it accumulates in the body, so the respiratory system is responsible for maintaining optimal gas levels.
2. Regulation of pH: The respiratory system helps regulate the pH balance in the body by controlling the amount of carbon dioxide that is expelled. Carbon dioxide combines with water in the body to form carbonic acid, which can lead to acidosis if it accumulates. By regulating carbon dioxide levels, the respiratory system helps maintain a healthy pH level in the body.
3. Protection Against Infections: The respiratory system also plays a role in protecting the body against infections caused by environmental pathogens. The lungs are lined with tiny hairs called cilia that help filter out harmful particles, such as bacteria, viruses, and allergens, before they reach the lungs. Additionally, the respiratory system produces mucus, which traps these particles and prevents them from entering the body. The mucus is then expelled by coughing or sneezing.
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