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This results in greater airflow through one nostril with periodic alternation between the nostrils. It is a physiological congestion of the nasal conchae, also called the nasal turbinates (curled bony projections within the nasal cavities), due to selective activation of one half of the autonomic nervous system by the hypothalamus.
Nasal obstruction characterized by insufficient airflow through the nose can be a subjective sensation or the result of objective pathology. [10] It is difficult to quantify by subjective complaints or clinical examinations alone, hence both clinicians and researchers depend both on concurrent subjective assessment and on objective measurement of the nasal airway.
In humans, the nasal cycle is the normal ultradian cycle of each nostril's blood vessels becoming engorged in swelling, then shrinking. The nostrils are separated by the septum. The septum can sometimes be deviated, causing one nostril to appear larger than the other. With extreme damage to the septum and columella, the two nostrils are no ...
Be gentle, and do one nostril at a time. Same with nasal sprays: there’s a right way to use them: “Avoid spraying your septum, which is in the middle of your nose. It will not be effective ...
A blocked sinus ostium, an opening from a paranasal sinus, will cause fluid to accumulate in the sinus. In children, the nose is a common site of foreign bodies. [68] The nose is one of the exposed areas that is susceptible to frostbite. [69]
Choanal atresia is caused by problems with the development of the nasal cavity and the palate. Development begins with neural crest cells. Frontonasal processes fold, forming nasal placodes (nasal pits). The nasobuccal membrane must rupture in places to form the choanae. A number of theories exist as to how this developmental process causes ...
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