Igazi eligciniwe ebuchosheni, isibindi kanye nezinso

Lesi sihloko sichaza ezinye ezicashile ukuze igazi eligciniwe ukuba ezibalulekile izitho zangaphakathi ezifana ubuchopho, isibindi kanye nezinso.

Cerebral ukugeleza kwegazi

Ubude igazi ligeleze ubuchopho kuqhathaniswa njalo, futhi umfutho siphakeme ngokwanele. Njengoba for the wendawo ukugeleza kwegazi ezingxenyeni ezahlukene ubuchopho, kunqunywa umfutho wokusebenza kwabo. Ngakho, lapho besebenza kanzima wendawo igazi cerebral flow uqweqwe yayo kungandisa amabili kuya mithathu kuqhathaniswa ukushuba ukugeleza kwegazi uphumule.

Ngokuya ukuqina kanye yobunzima womuntu skull ukumelana Imininingwane imithambo cerebral ngokwezinga elithile elincane sincike izinguquko blood pressure. Ngakho, lapho ingcindezi ku imithambo kwenzeka ukunwetshwa zabo, nakho kwandisa ingcindezi yotshwala, outflow yayo ingaphakathi spinal cord kokucindezelwa emithanjeni. Ngesikhathi esifanayo ukwehla lwemithambo ukumelana naso futhi kwenze ukwandisa ukumelana emithambo yegazi. Ngakho, i-cerebral palsy ukumelana semithambo, ngokuvamile, uhlala injalo ingashintshile.

umphumela Myogenic ku-cerebral ukugeleza kwegazi kuveza ukusabela imisipha bushelelezi yegazi zobuchopho yezinguquko ingcindezi kuzo. Libhekisela central iyunithi uhlelo autoregulyatsionnoy kwegazi cerebral palsy.

Potent cerebral ukugeleza kwegazi isilawuli kubhekwa e voltage ezingeni le lwemithambo yegazi i-carbon dioxide futhi ezihambisana pH ezingeni cerebrospinal fluid.

imiphumela umzimba ku-cerebral ukugeleza kwegazi kubalulekile kabusha endawo ukugeleza kwegazi phakathi izindawo ubuchopho, lapho umsebenzi obusebenzayo kwisimo ngasinye has a level ahlukene. Lapho ukwanda sendawo umsebenzi obusebenzayo ezinzwa e medium extracellular kwandisa lokuhlushwa potassium ion futhi adenosine. Lokhu-ke imiphumela bendawo ukwandisa semithambo futhi ngakhula ukugeleza kwegazi ezitsheni.

umphumela Neurogenic ku-cerebral ukugeleza kwegazi abhekwa kancane kunokuphakela ukulawulwa umzimba. Le ndawo eyinhloko hlelo lokusebenza endaweni imithambo ekhipha igazi enhliziyweni palsy, ububanzi 25-30 microns. Umthombo oyinhloko imiphumela neurogenic ku-cerebral ukugeleza kwegazi ezibhekwa nozwela postganlionarnye fibre. isiqondiso Ikakhulu sezinzwa yokukhuluma kuncike autoregulyatsionnoy voltage O2 kanye CO2, kusukela ithoni semithambo, okuhlushwa Ukwakheka ion, futhi phezu khona eku- cerebrospinal fluid kanye nobuchopho izicubu izinto eziphila abakhuthele.

igazi eligciniwe ukuze kwesibindi

Lapho bengena esangweni hepatic isibindi Umthambo futhi vein, kuyinto division yabo emiphongolweni emincane amaningi, ephelezelwa kulo lonke phatha Bile. Umthambo Interlobular futhi umthambo nge interlobular imbobo interlobular kungokwalabo okuthiwa "isibindi triad." Izindlala zamanzi eliseduze. Kusukela vokrugdolkovyh ekhipha igazi enhliziyweni nelifakayo capillary Suka ilibangise lobules hepatic nokuhlanganisa at azungeze zabo, ukwakha imikhumbi intralobular. Ngokusho kwakhe igazi siphela okuxubile bebheke kumasegmenti isikhungo kusukela azungeze futhi eqoqwe umthambo emaphakathi, oqala ku krovoottok tincetu emithanjeni sublobular, akha ngemithambo emikhulu hepatic kokushiya.

izinso liningi igazi

Umthambo, ilungu umzimba esangweni ihlukane imithambo, uwohloka, esikhundleni salokho, phezu Umthambo interlobar. Ngesikhathi umngcele cortex futhi medulla, bedlula phakathi Umthambo kuyoshaya arcuately kanye parallel kobuso izinso. Kulezi imithambo eshiya inqwaba imithambo mncane interlobular, okuyinto lapho siqondiswa ukuba kwamanzi emzimbeni. Perfusion medulla kwezinso kwenziwe ngqo arteriole yegazi esukela arc. amagatsha iDemo lateral kwemithambo yegazi interlobular ayingxenye capsule glomerular. It amagatsha seningene ngaphakathi inethiwekhi capillary. Khona-ke uhlangane capillary lwemithambo kanye kumiswa arteriole efferent.