Yobweretsa magazi ku ubongo, chiwindi ndi impso

Nkhani umu ena mokoma kusowa magazi ziwalo zofunika mkati ngati ubongo, chiwindi ndi impso.

Oziziritsa magazi

Total magazi kuti ubongo zimakhalanso zonse, ndi kukula ndi mkulu mokwanira. Koma otaya m'dera magazi mu madera osiyana a ubongo, amaonekera ndi mphamvu ya ntchito zawo. Choncho, pamene yovutayi ntchito m'dera magazi oziziritsa mu kutumphuka ake angadwale awiri kuti zitatu poyerekeza ndi mphamvu ya magazi pa mpumulo.

Kumbali ya stiffness ndi zikayamba wa anthu chigaza okwana kukana ziwiya oziziritsa akanayesetsa wamng'ono amadalira kusintha magazi. Choncho, pamene kuthamanga mu mitsempha kumachitika kuwonjezeka awo, womwe kumaonjezera mavuto mowa ndi outflow ake M'mimbamo ndi msana psinjika mitsempha. Pa nthawi yomweyo kuchepa wolumikizira kukana ndi kuonjezera kukana venous. Choncho, oziziritsa mtima kukana, ambiri, akhala m'pang'ono.

zotsatira Myogenic pa otaya oziziritsa magazi amapangidwa ndi zochita za minofu yosalala Mitsempha ya ubongo kusintha kuthamanga pa iwo. Zimatanthauza chapakati wagawo autoregulyatsionnoy dongosolo oziziritsa kufalitsidwa.

Amphamvu oziziritsa magazi Mtsogoleri imatengedwa mu mlingo voteji wa ku wolumikizira magazi mpweya woipa ndi kugwirizana pH mlingo wa madzimadzi cerebrospinal.

Zotsatira kagayidwe kachakudya pa otaya oziziritsa magazi n'kofunika kuti kusokonekera m'dera la magazi pakati m'madera ubongo, imene ntchito zinchito za zochitika munthu ali ndi mlingo wosiyana. Pamene kuwonjezeka ina ku ntchito zinchito maselo mitsempha sing'anga extracellular kumaonjezera ndende ya ayoni potaziyamu ndi adenosine. Izi nayenso zotsatira m'dera kukulitsa mtima ndi kuchuluka magazi m'zotengera.

zotsatira Neurogenic pa otaya oziziritsa magazi amaonedwa kukhala sakhala ogwira kuposa lamulo kagayidwe kachakudya. M'dera chachikulu cha ntchito ndi malo ziwiya oziziritsa wolumikizira, m'mimba mwake 25-30 microns. Ndiwo zotsatira neurogenic pa otaya oziziritsa magazi amaonedwa wachifundo postganlionarnye CHIKWANGWANI. Makamaka mantha lamulo la mawu zimatengera autoregulyatsionnoy voteji O2 ndi CO2, kuyambira mtima kamvekedwe, ndende ndi zikuchokera ayoni, ndi pa kukhalapo mu cerebrospinal madzimadzi ndi ubongo minofu zinthu biologically yogwira.

yobweretsa magazi chiwindi

Akafika pachipata kwa chiwindi chiwindi mtsempha wamagazi ndi mtsempha, kugawanikana awo mu zotengera angapo ang'onoang'ono, limodzi lonse ya ndulu ritsa. Interlobular mtsempha wamagazi ndi mtsempha ndi interlobular interlobular ritsa wa otchedwa "chiwindi wa ku." mwanabele ili pafupi. Kuyambira vokrugdolkovyh mitsempha ndi mitsempha capillaries kunyamuka yopita lobules kwa chiwindi ndi merging pa periphery awo, kupanga zipangizo intralobular. Malinga ndi iye magazi limayenda wosanganiza mu chitsogozo cha zigawo malo ku periphery ndi Akusonkhanitsa mtsempha chapakati, limene limayamba pa krovoottok la magawo mu mitsempha sublobular, zomwe ndi aakulu kwa chiwindi mitsempha kusiya.

impso kotunga magazi

Mtsempha wamagazi, membala wa bungwe la chipata ukugawa mu mitsempha ya, asamathe nawonso, pa mtsempha wamagazi ndi interlobar. M'malire a kotekisi ndi medulla, Amadutsa mu mtsempha wamagazi anakafika arcuately ndi kufanana pamwamba pa impso ndi. Kuyambira mitsempha izi masamba ambiri mitsempha woonda interlobular, amene akuuzidwa kuti pamwamba thupi. Perfusion aimpso medulla anagwira arterioles molunjika, mitsempha anakafika ku Arc lapansi. Short nthambi lateral ya mitsempha interlobular ndi mbali ya kapisozi glomerular. Ndi nthambi pochitika mu maukonde capillary. Ndiye kuphatikiza ndi wolumikizira capillaries ndi mapangidwe arterioles efferent.