The kufema centre iri munzvimbo dzakaderera chikamu hwomunhu

Mumwe rokuponesa upenyu-mashandiro anoita muviri womunhu ndiye kufema basa. Ichi vasiri kushanda zvizere zvoga nokudzorwa CNS (nechepakati tsinga), vachishandisa kufema centre. The kufema centre iri munzvimbo dzakaderera kuuropi. Kana akazorora, uve munhu asingadi cherechedzai mweya yenyu, kunyange achizadza mapapu pamwe mhepo (tuso), uye ipapo kwokusunungura kubva kare kuzadziswa ambient mhepo (nedzinovengwa) - zvichiitika chaizvo kunzwisisa, achiperekedzwa nokuda mutinhimira kufamba pamusoro intercostal tsandanyama uye diaphragm tsandanyama. Mubvunzo kupi kufema centre, kwenguva yakareba nyaya nharo iri yesayenzi ezvinhu, sezvo kufema kushanda muviri ane vanoverengeka vasiri zvigadziriswe uye zvinogona kudzorwa kubva uropi uye musana.

Afemeruke uye muviri

Kufema kunopa muviri metabolic gasi Exchange, unosanganisira maviri makemikari: okisijeni (O2) uye carbon dioxide (CO2). Nechinyoreso nekumwisa ropa carbon dioxide inobvisa CNS anotumira kupomba kuti zvaanopa simba ari afemeruke, yakachena rive inowedzerwa. Asiwo, kune supersaturated okisijeni muviri braked kufema nerevane Abbreviations thorax zvinoderedza, uye okisijeni anotanga iyerere kupinda neropa risingamboshandisi mari. Nokudaro, muviri chinotsigirwa pakuenzanisa gasi exchange.

anorova 15 paminiti

In rikaudza musimboti tsinga mapoka maviri Tutsinga tunofambisa mashoko utwu, vari kufema nepakati uye kufema muzinda yaiva chii anonzi medulla oblongata. Mapoka vaviri Tutsinga tunofambisa mashoko utwu vanoita chimwe basa, uye kushanda ichi chinosanganisira zvikamu zviviri, kuti inhalation uye nedzinovengwa. Boka rokutanga rinosanganisira inspiratory Tutsinga tunofambisa mashoko utwu anokonzera mweya, uye wechipiri boka - expiratory Tutsinga tunofambisa mashoko utwu anokonzera nedzinovengwa. Vose vari kusashanda rave kutumira pulses evashandi mune imwe mutinhimira (yemanyorero 15 cheka pechipfuva ari miniti), izvo zvinoita munhu optimum gasi mukutsinhana hurumende mumuviri. The pulses vadarike pnevmotaksichesky centre riri zvikamu uropi rinonzi "pons", riri pamusoro medulla oblongata. Sezvo kufema centre pachayo iri muna dhipatimendi rimwe medulla oblongata, muviri une kunzwisisa maviri-Danho kupararira nomunhu.

afemeruke

Excited inspiratory Tutsinga tunofambisa mashoko utwu asvike intercostal tsandanyama uye itai kuti ndizvipete, ukuwo kutanga ndizvipete yacho diaphragm tsandanyama. Mweya kunoitika izvo anomununura okisijeni kuti muviri chikamu chimwe. Kana iwe fema mapapu uwedzere kufamba kuuya receptors riri zvemapapu lobes. Ivowo, tuma nomunhu kuna medulla oblongata. Respiratoria centre anogamuchira nomunhu uye anochinja vapinde akamedura nokuda inspiratory Tutsinga tunofambisa mashoko utwu kuti kurasikirwa basa. Excited dzinotanga expiratory Tutsinga tunofambisa mashoko utwu ari kufema centre. Vanovata maitiro boka tsandanyama anokonzera marwadzo pechipfuva, uye nokudaro pane inofemwa.

Manzwiro nokufema

Kuwedzera kune inspiratory uye expiratory Tutsinga tunofambisa mashoko utwu ari kufema kwacho zvinokonzerwa zvimwewo. Sezvo kufema centre iri mune rimwe zvikamu uropi, zvinonzi kufurirwa zhinji akakunda zvinhu. Kufema kunogona kakawanda kubva mumuviri nesimba, mupfungwa, kutya kana ngozi. Basa kufema centre ndiyewo novimba hormone mamiriro nhengo. Asi chero zvakadaro pane mutemo metabolic pezvakaitwa mumuviri womunhu neropa yakachena vapfume.