Function of the Respiratory System:-
• Oversees gas exchanges (oxygen and carbon dioxide) between the blood and external environment.
• Exchange of gases takes place within the lungs in the alveoli (only site of gas exchange, other structures passageways.
• Passageways to the lungs purify, warm, and humidify the incoming air.
• Shares responsibility with cardiovascular system.
Organs of the Respiratory System:-
• Nose
• Pharynx
• Larynx
• Trachea
• Bronchi
• Lungs – alveoli
Nose:-
The only externally visible part of the respiratory system that functions by:
1.Providing an airway for respiration.
2.Moistening and warming the entering air.
3.Filtering inspired air and cleaning it of foreign matter.
4.Serving as resonating chamber for speech.
5.Housing the olfactory receptors.