Musayar gas

Wadatacce

• Bayani

Bayani

Iska yana shiga cikin jiki ta bakin ko hanci da sauri yana matsawa zuwa ga maƙogwaron, ko maƙogwaro. Daga can, yakan ratsa maƙogwaro, ko akwatin murya, kuma ya shiga trachea.

Sashin bututu bututu ne mai ƙarfi wanda ya ƙunshi zobba na guringuntsi wanda yake hana shi faɗuwa.

A cikin huhun huhu, bututun bututun iska ya zama izuwa hagu da dama. Waɗannan suna ƙara rarrabawa zuwa ƙarami da ƙananan rassa da ake kira bronchioles.

Bronaramin bronchioles ya ƙare a cikin ƙananan jakar iska. Wadannan ana kiransu alveoli. Suna kumbura lokacin da mutum yake shakar iska kuma yana yin kumbura idan mutum ya shaka.

Yayin musayar iskar gas oxygen yana motsawa daga huhu zuwa jini. A lokaci guda carbon dioxide yana wucewa daga jini zuwa huhu. Wannan yana faruwa a cikin huhu tsakanin alveoli da cibiyar sadarwar ƙananan jijiyoyin jini da ake kira kaɓaɓɓu, waɗanda suke a bangon alveoli.

Anan zaku ga jajayen jinin jini suna tafiya ta cikin kayan kwalliya. Ganuwar alveoli suna raba membrane tare da abubuwan kwalliya. Wannan kusancin su kenan.

Wannan yana barin oxygen da carbon dioxide su yaɗu, ko motsawa da yardar kaina, tsakanin tsarin numfashi da magudanar jini.

Kwayoyin Oxygen suna hadewa da jajayen kwayoyin jini, wadanda suke komawa zuciya. A lokaci guda, ana fitar da kwayoyin carbon dioxide a cikin alveoli daga jiki a lokaci na gaba da mutum zai fitar da numfashi.

Musayar gas yana bawa jiki damar sake cika iskar oxygen da kuma kawar da iskar carbon dioxide. Yin duka biyun larura ne don rayuwa.

• Matsalar Numfashi
• Cututtukan huhu