fefada

maanav ke vaksh guha mein hrudaya ko ghere hue donon fefade.[1]

hava ya vaayu mein shvaans lene vaale praaniyon ka mukhya shvasan ang fefada ya fupfus (jaisa ki ise vaigyaanik ya chikitseeya bhaasha me kaha jaata hai) hota hai. yeh praaniyon mein ek jode ke roop me upasthit hota hai. fefade ki deevaar asankhya guhikaaon ki upasthiti ke kaaran spanji hoti hai. yeh vaksh-guha mein sthit hota hai. ismein rakt ka shuddheekaran hota hai. pratyek fefada mein ek palmonari shira hrudaya se ashuddh rakt laati hai. fefade mein rakt ka shuddheekaran hota hai. rakt mein okseejan ka mishran hota hai. fefado ka mukhya kaarya vaataavaran se okseejan lekar use rakt parisancharan me pravaahit (milaana) karna aur rakt se kaarban daaioksaaid ko avashoshit kar use vaataavaran mein chhodna hai. gaison ka yeh vinimay asankhya chhote chhote patali-deevaaron waali vaayu putikaaon jinhein alviyoli kaha jaata hai me hota hai. yeh shuddh rakt palmonari dhamani dvaara hrudaya mein pahuainchata hai, jahaan se yeh fir se shareer ke vibhinn avayavon me pamp kiya jaata hai.

sandarbh

  1. gre ki maanav shaareeriki, 20th ed. 1918.