Iinyembezi zakho ngokucacileyo zenziwa ngamanzi ngetyuwa, njengoko uzonambitha xa usenomsindo. Kodwa ngaba zikhona ezinye izithako ezinyembezi? Ngaba ezinye iinyembezi zihlukile kwabanye?
Iinyembezi ziveliswa kwiingqungquthela ezilahlayo (cwenga iidonti) ezikuzo zangaphandle kweebhokhwe zakho. Ezi zigcawu zivelisa iinyembezi kwi-plasma yakho yegazi, ukhethe ezinye izinto kodwa kungabanye.
Izixhobo eziyinhloko zezinyembezi zi:
- Amanzi
- I-electrolytes (i-sodium, i-potassium, i-chloride, i-bicarbonate, i-magnesium kunye ne-calcium). Le yinto eyenza iinyembezi zibe yintyatyambo.
- Iiprotheni (lysozyme, lactoferrin, lipocalin, kunye ne-IgA). Iinyembezi ziphela malunga neyeshumi kwiprotheni ye-plasma yegazi.
- Lipids
- Mucins
Ukubunjwa kweeNqweno ezisisiseko eziLungisa iso
Iinyembezi zibambe indima ebalulekileyo ekugcineni sisempilweni. Iinyembezi zigcina ubuso bamehlo ethu zihlambulukile kwaye zimanzi kwaye zinceda ukukhusela amehlo ethu kumonakalo. Nangona benza ukuba bangabonakali ngaphezu kwamanzi, iinyembezi zethu zinzima kakhulu. Iinyembezi zenziwa nge-mucus, amanzi, kunye neoli kwaye ngamnye udlala indima kwiso.
- Iingubo zeMucus ebusweni belihlo kwaye zikunceda ukubopha isalathiso kweso. Ngaphandle kobunqamle be-mucus, iindawo ezinomileyo zingakha kwi- cornea , isakhiwo esicacileyo se-dome esingaphambi kweso.
- Amanzi akhulu kakhulu isisombululo saline (ityuwa) esinezivithamini ezahlukeneyo kunye neemaminerali ezibalulekileyo kumsebenzi weseli evamile. Ezi zondlo zibalulekile ukugcina uluhlu oluphezulu lweseli phezu kwamehlo, i-epithelium, inempilo kunye nokusebenza ngokuqhelekileyo.
- Ioli yefilimu yokuliba ikhusela ukukhulelwa kwezinyembezi. Abanye abantu abazenzi ioli (ngokwamaxesha amaninzi amaninzi), obangela ukuba amehlo anomileyo . Ukuba iqela leoli aliqhelekanga, iinyembezi ziphuma ngokukhawuleza.
Iinyembezi zethu ziquka i-antibiotic yemvelo ebizwa ngokuthi i-lysozymes. I-Lysozymes inceda ukugcina ubuso belihlo liphilile ngokulwa neebhaktheriya kunye neentsholongwane.
Ngenxa yokuba i-cornea ayinayo imithana yegazi, iinyembezi zinika neendlela zokuzisa izondlo kwiiseli zayo.
I-Reflex Izinyembezi Ezivela Kwi-Irritants
Xa iliso lakho licaphukisa, livelisa iinyembezi ezixhambileyo ukuze zihlambe izinto ezivuthayo. Mhlawumbi uchithe iinyembezi ezimbalwa xa ukhetha u-anyanisi okanye xa usuthuli emehlweni akho.
Iinyembezi Zemvakalelo
Iinyembezi ozichithayo xa unqotshwa yimvakalelo unomxholo ophezulu weeprotheni kunezinyembezi ezibangelwa zizizathu ezivuthayo. Ngomlinganiso wokufunda, umphandi wafumanisa ukuba iinyembezi zomzwelo zinamahomoni amaninzi, kuquka neprolactin, ihomoni ye-adrenocorticotropic kunye ne-leucine enkephalin.
Iinyembezi Xa Ulala
Xa ulala, iindlebe zakho zongeza amanzi angaphantsi kunye neeprotheni kwiinyembezi zakho kodwa zandisa inani lamagciwane, kunye neeseli zokulwa nesifo-ntsholongwane nazo ziyafudukela kwi-sac conjunctival.
Iinyembezi Njengoko Ude
Njengoko uneminyaka yobudala, uvame ukuvelisa iinyembezi ezimbalwa ngokuvakala, kwaye oku kunokukhokelela ekuveleni amehlo omeleyo. Iiprotheni zakho izilwanyana ezilahlayo ngokuqhelekileyo zongeza kwiinyembezi ziyancipha.
Umthombo:
> Bartlett JD, uJanus SD. Iikliniki ze-Ocular Pharmacology, i-5 Edition . USt. Louis, MO: i-Butterworth uHeinemann; 2008.