अस्थि
asthi shvet rang ka ek kathor ootak hai jisase sare kasheruki (ridhavale) jantuoan ke sharir ka kankal (dhaancha) banata hai. asthisharir ke akar ka adhar hai. asthiyoan dvara hi sharir gati karata hai tatha bhitar ke mukhy aang surakshit rahate haian. inhian ke karan hamare dainik kary sanpann hote haian.
asthi ek parivartanashil ootak hai or sharir ke bahut se rasayanik tatha jaiv parivartanoan se usaka sanbandh hai. rakt mean honevale rasayanik parivartanoan tatha sharir ke any bhagoan mean aant:sravi aur aharajany karanoan se svayan asthi mean rachanatmak parivartan hone lagate haian, aur asthi bhi in parivartanoan ka karan hota hai. ayuparyant asthi ka punarnirman hota rahata hai tatha usaki rachana badalati rahati hai.
sharir ki adhikatar asthiyaan lanbi hoti haian. inamean ek do chau de ya phoole hue shiroan ke bich lanba kaand (khokhala belan) hota hai. shiroan ko vardhak praant kahate haian, kyoanki yahian se asthi ki vriddhi hoti hai. asthi par ek atyant sookshm kala chadhi rahati hai, jisako asthyavaran kahate haian. kaand ke bhitar ek lanbi nalika hoti hai jisake bahar thos asthi mean do bhag hote haian. nalika ki or sushir bhag rahata hai jo sachhidr hota hai. usake bahar sanhat bhag hota hai jo ghana aur thos hota hai. bich ki nalika mean asthimajja bhari rahati hai. yahian rakt banata hai. asthimajja hi rakt ki phaiktari hai. raktanalikaoan dvara asthi ka poshan hota hai aur unamean na diyoan ke sootr bhi ate haian. bahut si asthiyoan ke praantiy bhagoan par hayalin namak upasthi chadhi rahati hai. ye bhag sandhiyoan ke bhitar rahate haian aur upasthi ke karan aianthane nahian pate. in praantoan par asthi ootak visheshakar kriyaman hota hai aur yahi navin asthinirman hota hai. sharir ki lanbaee isi praant par nirbhar rahati hai. jab praant aur kaand apas mean sanyukt ho jate haian to asthi ki lanbaee ki vriddhi ruk jati hai.
asthi - asthi asthikoshikaoan or kailasiyamayukt aantarkoshikiy vastu ki bani rahati hai. is aantarkoshikiy vastu mean sanyojak ootak ke tantu kailasiyam karbenet aur phasphet ke sath sthit hote haian jisase vastu mean kathorata a jati hai. asthi ki koshikaean do prakar ki hoti haian: ek asthinirmanak,jo asthi ootak ko banati aur use kailasiyamayukt karati hai aur doosari asthimanjak, jisaka kam asthi ke sab avayavoan ka poshan karana hai. asthi banane tatha asthiyoan ke jivan mean jo parivartan hote haian, ve sab in donoan kriyaoan ke parinamasvaroop hote haian aur sharir mean honevale rasayanik tatha bhautik ya jaiv parivartan inake nirnayak ya praranbh karanevale haian.
lanbi asthiyoan ke atirikt sharir mean kuchh chhoti, chapati tatha kramahin asthiyaan bhi paee jati haian. inake bhitar majjanalika nahian hoti. inake nam se inaka prakar spasht hai. kapal ki chapati asthioan mean do star hote haian jinake bich mean kuchh majja rahati hai. manibandh ya prapad ki chhoti asthiyaan haian. ridh ke kasheruk kramahin asthiyaan haian, jinaka akar visham hota hai.[1]
asthi jaantav sharir ka sabase kathor ootak hai. nee asthi ka rang gulabipan lie hue shvet hota hai. asthi ko anuprasth or se katane par usamean do prakar ka ootak milata hai-ek bahar ke bhag mean upasthit hathidaant ke saman saghan jisako sanhat (kanpaikt) asthi ya star kahate haian, aur doosara bhitar ka asthi bhag jo traibikuli ya sookshm palakoan ke jal ka bana hua hai jisake bich bich mean sanyojan karate hue avakash (spes) ban ge haian. isako spanshi ya sushir asthi kahate haian. sanhat bhag mean avakash ati sookshm hote haian aur thos padarth adhik. spanji bhag mean avakash b de haian aur thos padarth atyalp matra mean.
sharir mean asthi par paryasthi (periaaustiyam) kala chadhi rahati hai jisamean hokar raktavahikaean asthi mean pahuanchati haian. lanbi asthiyoan mean ek lanbi nalika usake oopari sire se niche tak jati hai. yah asthimajja guha ya nalika kahalati hai aur isaki bhiti par aantarasthi kala achchhadit rahati hai. asthinalika mean majja bhari rahati hai.[2]
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tika tippani aur sandarbh
sanbandhit lekh
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