RESPIRATORY SYSTEM
STRUCTURE OF TRACHEA
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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gas exchange occurs
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harmful substances are removed and air becomes warm
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the vocal cords allow us to talk
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no air passes
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Detailed explanation-1: -The major function of the nose is to warm and humidify air before it reaches to the lungs for gas exchange. Conditioning of inspired air is achieved through evaporation of water from the epithelial surface. The continuous need to condition air leads to a hyperosmolar environment on the surface of the epithelium.
Detailed explanation-2: -The Paranasal Sinuses Surround the Nasal Cavities Mucosae line the paranasal sinuses and help to warm and humidify the air we inhale.
Detailed explanation-3: -It is divided into two sections called nasal passages. Air moves through these passages during breathing. The nasal passages filter and warm the air, and make it moist before it goes into the lungs.
Detailed explanation-4: -Air enters the respiratory system through the nose or the mouth, then travels down a pathway to the lungs. In the nostrils, air gets warmed and moistened. Tiny hairs in the nose called cilia (SIL-ee-uh) filter out dust and other particles.