Swallow the saliva in mouth cavity and immediately afterwards try to swallow agin and again.You will probably find it difficult to swallow the second time and even difficult for the third time.Why do you think so?Swallow the saliva in your mouth cavity and immediately afterwards try to swallow again and again. You will probably find it difficult to swallow the second time and even more difficult the third time. Why do you think this is?Now drink a glass of water and note that you have no difficulty swallowing in rapid succession.Explain the differences.
2006-06-24
02:38:42
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5 answers
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Science & Mathematics
➔ Biology