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The nasal cavity consists of all the bones, tissues, blood vessels, and nerves that make up the space inside the nose. The most important functions of the nasal cavity include warming and humidifying the air as you breathe and acting as a barrier for the immune system to keep harmful microbes from entering the body.
The nasal cavity lies just behind the two nostrils and forms the interiors of the nose. It makes up the upper respiratory system along with the paranasal sinuses, oral cavity, pharynx, and larynx [2], and is the first of the structures that form the respiratory tract [3].
The nasal cavity is the uppermost part of the respiratory system and provides the nasal passage for inhaled air from the nostrils to the nasopharynx and rest of the respiratory tract. The paranasal sinuses surround and drain into the nasal cavity.
The nasal cavity has four functions: Warms and humidifies the inspired air. Removes and traps pathogens and particulate matter from the inspired air. Responsible for sense of smell. Drains and clears the paranasal sinuses and lacrimal ducts.
The nasal cavity functions to humidify, warm, filter, and act as a conduit for inspired air, as well as protect the respiratory tract through the use of the mucociliary system. The nasal cavity also houses the receptors responsible for olfaction.
Nasal cavities: These are hollow spaces where air flows in and out. You have two of them — one on each side. Mucus membranes line your nasal cavities. Nerve cells: These cells communicate with your brain and give you your sense of smell. Nose hairs: The hairs inside your nose trap dirt and dust that would otherwise end up in your nasal passages.
The internal part of the nose is termed the nasal cavity. It is involved in respiration, olfaction, speech and taste. In this page, we are going to study the nose anatomy, with a special focus on the anatomical importance of the nasal cavity structure.