NOSTRILS Meaning and
Definition
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Nostrils refer to the two external openings of the nasal cavity located on either side of the nose that allow the passage of air. They serve as the primary entrance point for inhalation and exhalation during the process of respiration. Nostrils are vital for the exchange of gases, which facilitates breathing and maintains the supply of oxygen to the body.
Each nostril consists of a small, flexible structure called the nasal valve, which helps regulate the flow of air entering and leaving the nasal cavity. The nostrils are lined with specialized hair called nasal vibrissae, which filter out larger particles from the air, preventing debris from entering further into the respiratory system. The inner lining of the nostrils is covered with tiny hair-like projections called cilia, which help trap and remove dust, bacteria, and other foreign substances.
The structure and shape of the nostrils are of great importance in different species as they vary significantly. In humans, the nostrils play a significant role in the sense of smell, as they house the olfactory receptors responsible for detecting various scents and odors.
Overall, nostrils are essential anatomical features involved in respiration, air filtration, and the sense of smell. Their functionality and position make them crucial for maintaining a healthy and efficient respiratory system.
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One of the two apertures of the nose which give passage to air and to the secretions of the nose.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
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Etymology of NOSTRILS
The word "nostrils" originated from the Old English word "nosthyrl", which was a combination of "nost" meaning "nose" and "hyrl" meaning "hole". This term evolved from the Old English word "nosu", which meant "nose", ultimately derived from the Proto-Germanic word "nasō". The word "nostrils" has remained relatively consistent in its meaning and form throughout English history.
Similar spelling words for NOSTRILS
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