मस्तिष्क  हिन्दी देवनागरी में पढ़ें।

mastishk
Brain

(angrezi:Brain) mastishk adhikansh jiv jntuon ke sharir ka avashyak ang hain. is lekh men manav sharir se snbndhit ullekh hai. prani jagath men manushy ka mastishk sarvadhik vikasit hota hai. vayask manushy men isaka bhar lagabhag 1350 se 1400 gram hota hai. yah khopadi ki kapalaguha men surakshit rahata hai. kapal guha ka ayatan 1200 se 1500 ghan sentimitar hota hai. mastishk ke charon or do jhilliyan paee jati hain. bahari jhilli ko dridhatanika aur bhitari jhilli ko mridutanika kahate hain. donon jhilliyon ke madhy pramastishk merudravy bhara rahata hai. yah mastishk ki chot, jhatakon adi se raksha karata hai. mastishk ka nirman tantrika koshikaon tatha nyoorogliyal koshikaon ke dvara hota hai.

manav mastishk ke bhag

manav mastishk ke tin bhag hote hain-

  1. agr mastishk
  2. madhy mastishk
  3. pashch mastishk

agr mastishak

ise prosenasiphelon kahate hain. isake do bhag hote hain-

  • pramastishk
  • agramastishk pashch

pramastishk

yah mastishk ka 2/3 bhag banata hai. yah anulamb bidar dvara daen tatha baen pramastishk golarddhon men bnta rahata hai. pratyek pramastishk golarddh ki samoochi satah anekon bhnjon men valit hoti hai. pramastishk ke bahari bhag karteks men tantrika koshikaon ke koshikakay tatha inake dendraits sthit hote hain. bhitar ke shvet dravy men tantrika koshikaon ke eksaaun sthit hote hain.

kary

pramastishk men kee kendr hote hain. sharir ki vibhinn kriyaen inhin kendron par ashrit rahati hain. jaise- hriday gati, bhojan grahan karana, sans lena, pramastishk dvara snchalit kriyaen hain. pramastishk hi ghrina, prem harsh, vishad, duahkh, bhay adi snvegon ki utpatti ka kendr hai.

agramastishk pashch ya daienosaiphelon

yah agramastishk ka pashch bhag hota hai. isaka prishth bhag patala evn adhar bhag mota hota hai. agramastishk pashch ki bhitti, thailemas, tatha haipothailemas men vibhedit rahati hai. haipothailemas ki adhar satah se piyoosh granthi lagi rahati hai. agramastishk pashch ki prishth satah par piniyal kay sthit hoti hai.

kary

agramastishk men daienasiphelon upapachay tatha janan kriya, drik pind drishti gyan ka niyantran aur niyaman karate hain.

madhy mastishk

ise misenasiphelon kahate hain. yah mastishk ka chhota (lagabhag 2.5 sentimitar) lamba snkuchit bhag hota hai. is bhag men drik tantrikaen paraspar kraaus karake aptik kiyajma banati hain.

kary

yah drishti evn shravan snvedanaon ko pramastishk tak pahunchane ka kary karata hai.

pashch mastishk

mastishk
Brain

pashch mastishak ko 'raaumbenasiphailaaun' bhi kahate hain. yah mastishk ka sabase pichhala bhag hota hai. ise mastishk vrint bhi kahate hain. isamen tin bhag hote hain-

anumastishk ya seribelam

yah pramastishk ke pashch bhag se sata rahata hai. yah titali ki akriti ka hota hai. isake daen tatha baen do phoole hue anumastishk golarddh hote hain jo varmis namak snkare dandanuma madhyavarti rachana se jude rahate hain. pratyek anumastishk golarddh apani or ke pramastishk golarddh ki anukapaliy pali se ek gahari anuprasth khanch ke dvara prithakh rahata hai. anumastishk men bhi bahari dhoosar dravy tatha bhitari shvet dravy hota hai. shvet dravy jagah–jagah dhoosar dravy men pravesh karake vriksh ki shakhaon ke sadrish rachana banata hai, jise pranavriksh ya arabar viti kahate hain.

kary

yah sharir men hone vali sabhi prakar ki sharirik gatiyon ka snchalan karata hai.

pons verolaee

anumastishk men guha ka abhav hota hai. anumastishk ke adhar bhag men shvet dravy ki ek patti hoti hai. jise pons verolaee kahate hain. yah donon manumastishk golarddhon ko jodati hai.

kary

yah sharir ke donon parshvon ki gatiyon ka samanvayan karati hai.

mastishk puchchh ya maidyoola ablangeta

yah mastishk ka sabase pichhala bhag hota hai. yah age merurajju ke roop men kapal guha se bahar nikalata hai. isaka agala bhag chauda hota hai jo pichhe ki or patala hokar merurajju banata hai. isaki parshv divaren moti tatha tantrika pathon ki bani hoti hain. mustishk puchchh ki prishthabhoomi par pashch raktak jalak sthit hota hai.

kary

yah sharir ki anaichchhik kriyaon, hriday ki dhadakan, shvasan gatiyan, bhojan ko nigalana, aharanal ki gatiyon adi ka niyntran karata hai.


panne ki pragati avastha
adhar
prarambhik
madhyamik
poornata
shodh

snbndhit lekh

varnamala kramanusar lekh khoj

a   a    i    ee    u    oo    e    ai    o   au    an    k   kh    g    gh    n    ch    chh    j    jh    n    t    th    d   dh    n    t    th    d    dh    n    p    ph    b    bh    m    y    r    l    v    sh    sh    s    h    ksh    tr    gy    ri    ri    aau    shr   aah