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The nose. The nose is the only part of the respiratory system that is visible externally and is the route for air entry into the respiratory system. Air is drawn in via the nostrils or external nares and enters the large nasal cavity, which is divided into two by the nasal septum..Mouth. The mouth, also known as the oral cavity, is the secondary external opening for the respiratory tract. Most normal breathing takes place through the nasal cavity, but the oral cavity can be used to supplement or replace the nasal cavity s functions when needed..
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Nose Wikipedia
A nose is a protuberance in vertebrates that houses the nostrils, or nares, which receive and expel air for respiration alongside the mouth.Behind the nose are the olfactory mucosa and the sinuses.Behind the nasal cavity, air next passes through the pharynx, shared with the digestive system, and then into the rest of the respiratory system.In humans, the nose is located centrally on the face .
Attention All Mouth Breathers Important Reasons Why
I f you're a chronic mouth breather because of a stuffy nose, you're not alone. As the weather chills and allergies and colds abound, and nasal congestion becomes a common trend, mouth breathing inevitably follows especially when you're sleeping..
Philtrum Wikipedia
Function. In most mammals, the philtrum is a narrow groove that may carry dissolved odorants from the rhinarium or nose pad to the vomeronasal organ via ducts inside the mouth For humans and most primates, the philtrum survives only as a vestigial medial depression between the nose and upper lip The human philtrum, bordered by ridges, also is known as the infranasal depression, but has no .
Hair Betemunah Org
HAIR . The highest part of the human body is the hair This complex subject is so large that I needed a separate paper to explain it..
