respiratory system

• what is the function of the respiratory system

  the respiratory system is responsible for the exchange of gases between the body and the environment, allowing oxygen to be taken in and carbon dioxide to be expelled.
• what are the organs in the respiratory system in order of process

  Nose/mouth, trachea, bronchi, lungs, diaphragm.
• Inhalation involves the contraction of the diaphragm and intercostal muscles, expanding the chest cavity and lowering the air pressure inside the lungs, allowing air to rush in. Exhalation is the relaxation of these muscles, causing the chest cavity to decrease in size and air to be pushed out of the lungs.
• Alveoli are tiny air sacs in the lungs where gas exchange occurs. Oxygen from the air diffuses into the blood vessels surrounding the alveoli, while carbon dioxide from the blood diffuses into the alveoli to be exhaled.
• Oxygen is mainly transported in the blood bound to hemoglobin in red blood cells, forming oxyhemoglobin.
• Cilia are tiny hair-like structures lining the respiratory tract that help to sweep mucus and trapped particles out of the airways, preventing them from entering the lungs. Mucus moisturizes the airways and traps dust, bacteria, and other foreign particles, which are then expelled through coughing or sneezing.
• how can smoking damage the respiratory system

  Smoking can damage the respiratory system by causing chronic bronchitis, emphysema, and lung cancer. It irritates the airways, reduces the ability of the lungs to clear mucus, and destroys the alveoli, leading to breathing difficulties and increased risk of respiratory infections.
• how does the respiratory help regulate the pH balance in the body

  The respiratory system regulates the levels of carbon dioxide in the blood, which helps to maintain the body's pH balance. When carbon dioxide levels increase, breathing rate increases to expel excess carbon dioxide, preventing a decrease in pH (acidosis).