वृक्क
(aangrezi:Kidneys) manushy mean ek jo di vrikk hote haian, jo udar guha ke prishthabhag mean dayaphram me niche v kasherukadand ke idhar–udhar (daean–baean) sthit hote haian. dahini or yakrit ki upasthiti ke karan dahina vrikk baean vrikk se kuchh age sthit hota hai. donoan vrikk ek patali peritoniyam jhilli dvara udaraguha ki prishth divar se lage hue hote haian aur vasiy ootak ke andar bhi dhanse hote haian. inhean gurde bhi kahate haian.
bahy sanrachana
manushy ke vrikk gahare lal rang ke tatha sem ke bij jaisi akriti ke hote haian. pratyek vrikk lagabhag 10-11 semi lamba, 5 semi chau da tatha 2.5-3 semi mota hota hai. pratyek vrikk ka bahari tal uttal tatha bhitari tal avatal hota hai. avatal satah ki or gaddhe jaisi sanrachana hoti hai, jise vrikk nabhi ya hailas kahate haian. isi se hokar rinal dhamani tatha tantrika vrikk mean pravesh karati hai aur rinal shira, lasika vahini tatha mootravahini isamean se bahar nikalati haian. vrikk ke charoan or tantumay sanyoji ootak ka bana patala vrikk samput ya rinal kaipsool hota hai. pratyek vrikk mean oopari sire par ek adhivrikk ya edrinal granthi namak antahsravi granthi topi ke saman dhanki hoti hai.
antarik sanrachana
manushy ka pratyek vrikk ya gurda ek dridh tantumay sanyoji ootak ke bane vrikk samput se dhanka rahata hai. vrikk ke madhy mean lagabhag khokhala tatha kipakar bhag hota hai, jo sankara hokar mootr nalika ka nirman karata hai. is bhag ko shirshaguha, shroni ya pelvis kahate haian. vrikk ka shesh bhag bahari valkut tatha bhitari medyoola mean vibhedit rahata hai.
valkut
isamean vrikk nalikaoan ya nephrons ke mailapidhi kosh tatha sanvalit nalikaoan ke samipasth tatha doosara bhag sthit hote haian.
medyoola
yah vrikk ka bhitari halke rang ka bhag hota hai. isamean medyoolari piramid pae jate haian. vrikk mean aise 10-12 piramid dikhaee dete haian, jo ki apane shirsh bhag se shirsh guha mean khulate haian.
nalika ki saranchana
vrikk mean asankhy sookshm nalikaean hoti haian, jo atyant kundalit tatha lambi hoti haian. ye vrikk ki sanrachanatmak tatha kriyatmak ikaee hoti haian. pratyek vrikk nalika mean nimnalikhit bhag hote haian:-
mailapighiyan kosh
isake do bhag haian
- ek pyale ke akar ka bomain samput
- keshikaguchchh ya glomerulas- yah bomain samput ki guha mean sthit rikt keshikaoan ka jal hota hai.
stravi nalika isake tin bhag haian-
- samipasth kundalit bhag
- madhy henale loop
- doorasth kundalit bhag.
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