Asabhoi vegetativi (avtonomi)

Sistemai asabi vegetativi (khudmukhtori). Dar avvali asri XIX olimi fransavi F.K. Bish vobasta az ijroishi vazifai khud sistemai asabi vegetativiro kashf kard.

Asabi vegetativi az qismhoi markazi va kanori iborat ast. Qismi markazi — dar magzi cap va harommagz joygir buda, kanori boshad az asabho va girehhoi asabi iborat ast. Asabho dar navbati khud az markazhoi vegetativii harommagz va magzi cap ba girehhoi vegetativi ravanda va asabhoi az girehhoi neyronho ba uzvho ravanda judo meshavand. Qismi avtonomii sistemai asab az qismi somatiki bo on farq mekunad, ki tanzimi kori uzvhoro faqat tavassuti girehi asabi tamin mekunad. Neyronhoi girehho impulshoi na on qadar ziyodro ravona mekunad, ki ba kori uzvhoi dokhili khalal namerasonad. Tanzimi avtonomi beshuurona buda az tarafi odam idora karda nameshavad. Qismi avtonomii sistemai asab dar navbati khud az du zerqism iborat ast. 

Simpatiki va parasimpatiki (gumroh). Markazi asabhoi simpatiki dar moddai khokistarrangi segmenthoi gardan to chorband joygir shudaand. Markazi asabi parasimpatiki boshad dar magzi darozruya va chorband joygir shudaast. Asabhoi simpatiki va parasimpatiki muqobili yakdigar amal namuda kori mutadili uzvhoi organizmro tamin mekunand.

Masalan: asabi simpatiki kori dilro faol namuda, raghoi khunro khurd mekunad dar natija fishori khun baland meshavad. Judoshavii shirai meda kam shuda, kashishkhurii devorii on sust megardad.

Asabi parasimpatiki boshad, kori dilro nofaol menamoyad, dar natija raghoi khun vase shuda, fishori khun past meshavad. Judoshavii shirai meda ziyod meshavad. Kashishkhurii devorii meda faol megardad. Hazmshavii khurok va ba khun dokhilshaviash meafzoyad. Faoliyati sistemai asabi vegetativi dar mutobiqshavii  organizm ba sharoiti muhiti atrof naqshi muhimi biologi mebozad. 

Savolho

1. Sistemai asabi vegetativi chist?
2. Kadom namudhoi in asabro medoned?
3. Asabhoi simpatiki va gumroh ba uzvho chi khel tasir mekunand?