Utshintshiselwano ngegesi

Umxholo

• Ushwankathelo

Ushwankathelo

Umoya ungena emzimbeni ngomlomo okanye ngempumlo kwaye uye ngokukhawuleza uye kwi-pharynx, okanye emqaleni. Ukusuka apho, udlula kwingqula, okanye kwibhokisi yelizwi, kwaye ungene kwi-trachea.

I-trachea yityhubhu eyomeleleyo equlethe amakhonkco e-cartilage ayithintelayo ukuba ingawi.

Ngaphakathi emiphungeni, amasebe e-trachea aya kwi-bronchus yasekhohlo nasekunene. Oku kuqhubeka ukwahlulahlula kube ngamasebe amancinci kunye namancinci abizwa ngokuba yi-bronchioles.

Ezona bronchioles zincinci ziphelela kwiisakana zomoya ezincinci. Ezi zibizwa ngokuba yi-alveoli. Bayafufuma xa umntu ephefumla kwaye encipha xa umntu ephefumla.

Ngexesha lotshintshiselwano ngegesi ioksijini isuka emiphungeni iye kwigazi. Kwangelo xesha ikharbon diokside idlula egazini iye emiphungeni.Oku kwenzeka kwimiphunga phakathi kwe-alveoli kunye nenethiwekhi yemithambo yegazi encinci ebizwa ngokuba yi-capillaries, ebekwe kwiindonga ze-alveoli.

Apha ubona iiseli ezibomvu zegazi ezihamba ngee-capillaries. Iindonga ze-alveoli zabelana ngenwebu kunye nee-capillaries. Yiyo indlela abasondele ngayo.

Oku kuvumela ioksijini kunye nekhabhon diokside zisasazeke, okanye zihambe ngokukhululekileyo, phakathi kwenkqubo yokuphefumla kunye negazi.

Iimolekyuli zeoksijini zinamathele kwiiseli ezibomvu zegazi, ezibuyela entliziyweni. Kwangelo xesha, iimolekyuli zekharbon diokside ezikwi-alveoli zikhutshelwa ngaphandle komzimba ngexesha elizayo xa umntu ekhupha.

Ukutshintshiselana ngegesi kuvumela umzimba ukuba uzalise ioksijini kwaye ususe ikharbon diokside. Ukwenza zombini kubalulekile ukuze usinde.

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