Ukushintshaniswa kwegesi

-Delile

• Ukubuka konke

Ukubuka konke

Umoya ungena emzimbeni ngomlomo noma ngamakhala bese usuka ngokushesha uye pharynx, noma emphinjeni. Kusuka lapho, kudlula umphimbo, noma ibhokisi lezwi, bese kungena kudoti.

I-trachea yishubhu eliqinile eliqukethe amasongo e-cartilage alivimbela ukuthi lingawi.

Ngaphakathi kwamaphaphu, amagatsha e-trachea abe yi-bronchus engakwesokunxele nangakwesokudla. Lokhu kuqhubeka ngokuhlukana kube ngamagatsha amancane namancane abizwa ngama-bronchioles.

Ama-bronchioles amancane agcina emasakeni amancane omoya. Lezi zibizwa ngokuthi i-alveoli. Zifutheka lapho umuntu ehogela futhi ehlise umoya lapho umuntu ephefumula.

Ngesikhathi sokushintshaniswa kwegesi umoya-mpilo usuka emaphashini uye egazini. Ngasikhathi sinye isikhutha esidlula egazini siye emaphashini.Lokhu kwenzeka emaphashini phakathi kwe-alveoli noxhumano lwemithambo yegazi emincane ebizwa ngokuthi ama-capillaries, atholakala ezindongeni ze-alveoli.

Lapha ubona amangqamuzana abomvu egazi edlula kuma-capillaries. Izindonga ze-alveoli zihlanganyela ulwelwesi nama-capillaries. Basondele kanjalo-ke.

Lokhu kuvumela i-oxygen ne-carbon dioxide ukuthi isakaze, noma ihambe ngokukhululeka, phakathi kohlelo lokuphefumula nogazi.

Ama-molecule e-oksijeni anamathisela kumaseli abomvu egazi, abuyela enhliziyweni. Ngasikhathi sinye, ama-molecule e-carbon dioxide e-alveoli akhishwa emzimbeni ngesikhathi esizayo lapho umuntu ephefumula.

Ukushintshaniswa kwegesi kuvumela umzimba ukuthi ugcwalise umoya-mpilo futhi uqede isikhutha. Ukwenza zombili kuyadingeka ukuze usinde.

• Izinkinga Zokuphefumula
• Izifo Zamaphaphu