Achoooo! We sneeze when
something tickles or irritates
the inside of our nose. We
also sneeze when we have a
cold. Why do we sneeze in
each of these situations?
Answers
Answered by
1
Explanation:
sneezing is type of reflex . Sneezing is our natural inbuilt defence against foreign agents like dust,etc.
Answered by
1
Answer:
Ist Situation : Sneezing is a mechanism your body uses to clear the nose. When foreign matter such as dirt, pollen, smoke, or dust enters the nostrils, the nose may become irritated or tickled. When this happens, your body does what it needs to do to clear the nose — it causes a sneeze.
2nd situation : When a cold virus infects nasal cells, the body releases its own natural inflammatory mediators, such as histamine. When released, inflammatory mediators cause the blood vessels to dilate and leak, and the mucus glands secrete fluid. This leads to the irritation that causes sneezing.
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