bio小問

digestion 是不是include ingestion,digestion, egestion 同absorption?
No, digestion means the breakdown of large food into small and diffusible form. 而你列出的是全過消化過程,其中包括 ingestion,digestion,absorption,assimilation[同化作用](即是身體怎樣去運用已經吸收了的食物)及最後egestion柯屎

ingestion 的過程是由口腔到哪裏
只限於口腔(buccal cavity)內進行,可以是用teeth去cut food也可以指口水中的amylase去digest starch.

absorption 由哪個器官到哪個器官
只限於在小腸(small intestine)中,因為只有在這一個部份,食物才完全被消化,(當然除了vegetable)才可以完全被吸收

最後問埋屎係邊度開始制造
在colon裏,any undigestable food will form feaces which will be stored at rectum.


希望幫到你.

No.The true is that nutrition includes ingestion,digestion,absorption,assimilation and egestion.
Ingestion starts from mouth through pharynx(咽) to oesophagus(食道).
Absorption mainly occurs in ileum(迴腸).Some happens in stomach(胃) and colon(結腸).
Faeces(糞便) are produced in large intestine(大腸)

digestion 是不是include ingestion,digestion, egestion 同absorption?
不是

digestion有2種
physical 同chemical
physical:增加食物既表面面積 令以後既chemical digestion更有效率
chemical :分解食物成為身體可吸收既分子

absorption:吸收那些分子入血液

屎係一堆未消化/吸收既食物,唔係製造出黎