Yintoni zegazi? Yintoni indima yazo umzimba? Zeziphi izifo zegazi landa

IiPlatelets ezincinane non-nuclear izinto ukusekwa igazi. Bona inxaxheba hemostasis (a oluntsonkothileyo reactions ezijolise ukuyeka ukopha kunye isilumkiso). IiPlatelets round okanye okweqanda imilo. Netoti iseli phakathi microns amabini anesine.

Xa imithambo yegazi, neeplatelets zicwangciswe ezindongeni okanye egazini. Kwimeko yesibini, le iiseli isekwimo ziphumle kwaye ngokumila disk. kusebenze zegazi negalelo ekutshintsheni iifom zazo: iiseli baba sphericity kunye protuberances ifomu ezithile (pseudopodia). Ngokusebenzisa ezi nkqubo bayakwazi lweziqalelo igazi ukunamathela kwenye okanye udonga isitya ukuba umonakalo. Le nto ibizwa ngokuba udibaniso (ukuhlala ndawonye). Zegazi, koko, ilifa ngezakhiwo adhesion (ukubumbana), degranulation (ukukhululwa of contents), emuva ihlwili (okanye ukwahlukana ngokupheleleyo yokwehla ihlwili igazi serum). Kumphezulu wayo, iiseli bayakwazi kuyinyamezela lwefibrinogen, into impilo esebenzayo (serotonin), anticoagulants, kunye izakhiwo omzimba (ajikelezayo).

Ngu adhesion kunye zegazi udibaniso ibonelela hemostasis kwiinqanawa ezincinane-ukuvuleka (iiseli yande kwindawo lomonakalo). Njengoko zokukhawulezisa inkqubo coalescence zezi iadrenaline, thrombin, collagen, serotonin. Ngenxa inxaxheba thrombin na iinkqubo ukubunjwa (pseudopodia). zithutha zegazi ziqulathe izinqumisi (serotonin, peroxidase transcriptase zegazi lwefibrinogen, diphosphate adenosine (ADP), serotonin, zegazi-impiriyali ukukhula, von Willebrand factor).

Ngexesha esokuqala lehlwili legazi lwenzeka adhesion ukuba fibrin zixhobo, ndimkhulule trombostenina leyo luhlala kuzo. Isiphumo ngetywina kwaye Ukucofa imisonto, kanjalo bakha thrombus ephambili.

Uhlalutyo zegazi ukumisela parameters coagulation. Ingqalelo a xi eqhelekileyo amawaka 180-320 milliliter nganye.

Ukuba zegazi Ekwandeni, ngoko kukho thrombocytosis. Loo imeko inokuba sikombisa sisifo esingapheliyo zohlobo, nangezilonda, izifo igazi ezosulelayo. Thrombocytosis kungabangela ukubunjwa egazi igazi nasemiphandeni. Ukuba zegazi Ekwandeni, kunokwenzeka umzimba ngamanzi. Loo imeko kuxhokonxwa nokugabha, ubhaliso olunganelanga ulwelo, esitulweni disorder.

Uyondelelwano lwee- zegazi egazini usenokwahluka ngokuxhomekeke kwixesha lonyaka okanye ngosuku. Ukwehlisa umxholo seli ibonakala kwixesha sexesheni okanye yokukhulelwa. Amaxesha amaninzi zegazi landa emva amandla omzimba.

Thrombocytosis angenzeka zombini abadala kunye nabantwana. Ukwandisa xi zegazi kunokuba lokuqala okanye ezenqanaba lesibini.

Abantwana thrombocytosis kusekwa emva nokukhutshwa ukungaqheleki bekhubazekile.

Ekuqaleni anda zegazi, ngokuqhelekileyo xa eritremii, leukemia esinganyangekiyo myeloid kunye nezinye izifo negazi. Ukwandisa lwee- iiseli igazi esidityaniswe kwezinga kwisahlulo siphu- (megakaryocytes). Le nkqubo uphawu zenguqu amabi.

thrombocytosis Secondary ibonakele izifo evela ngokwandiswa imveliso thrombopoietin (polypeptide hormone).

Kwiiplatelets zandiswe ukudumba okwenziwa sisilonda sikabhobhosi, isifo sephepha yemiphunga, samathambo articular izilonda umlinganiswa isifo sephepha extrapulmonary, amyloidosis, osteomyelitis, isibindi ukuqina kunye nezinye izinto ezimbi ezingapheliyo arhabaxa. Thrombocytosis kwenzeka kwisiqalo yophuhliso yamathumba yingozi, hemorrhages, emva iziphene ezithile kokuzalwa.