為甚麼我們吞食物或水時不能呼吸﹖
回答 (3)
2007-01-17 9:21 pm
✔ 最佳答案
因為氣管和食道用同一個開口, 喉(larynx)當吞嚥時, 喉通往氣管的通道會被會厭(epiglottis)這塊軟骨覆蓋, 防止異物進入氣管引致窒息, 所以吞嚥時氣管關閉, 不能呼吸
2007-01-17 9:24 pm
It is because our 食道擴大, 氣道temp壓着(they are together, one is front, another is back)
By the way, 氣道won't completely close because we have some circular bones surround it.
By the way, 氣道won't completely close because we have some circular bones surround it.
參考: Me
2007-01-17 9:23 pm
人體喉嚨部份有塊o野(唔記得叫乜).. 係o係我o地吞食物或水時遮著氣管, 好讓食物或水順利進入食道而唔係氣管以致塞住氣管導致室息
咁即然o係吞食物或水時個氣管俾塊o野遮住, 好自然o個一刻就冇空氣入倒氣管, 於是乎不能呼吸
2007-01-17 13:24:43 補充：
原來塊o野係叫會厭(epiglottis)...
咁即然o係吞食物或水時個氣管俾塊o野遮住, 好自然o個一刻就冇空氣入倒氣管, 於是乎不能呼吸
2007-01-17 13:24:43 補充：
原來塊o野係叫會厭(epiglottis)...
參考: n年前bio學的...
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