Puas yog cov tshuaj tiv thaiv tam sim no mloog cov zis?

Cov txheej txheem:

Puas yog cov tshuaj tiv thaiv tam sim no mloog cov zis?
Puas yog cov tshuaj tiv thaiv tam sim no mloog cov zis?
Anonim

Cov khoom siv hluav taws xob ntau, lossis cov txheej txheem tiv thaiv tam sim no, yog siv los ntawm nephrons ntawm tib neeg excretory system rau concentrate tso zis hauv ob lub raum.

Yuav ua li cas cov tshuaj tiv thaiv tam sim no concentrated zis?

Kev sib faib ntau hauv ob lub raum yog txheej txheem ntawm siv lub zog los tsim cov osmotic gradient uas ua rau koj rov nqus dej los ntawm cov kua dej hauv tubular thiab tsim cov zis ntau.

Yuav ua li cas ua rau cov zis muaj zog?

Nyob rau hauv lub xub ntiag ntawm ADH, cov medullary sau ducts ua dawb do permeable rau kua thiab dej. Raws li qhov tshwm sim, cov kua dej nkag mus rau hauv cov ducts (txoj kev mus rau lub raum pelvis thiab tom qab tshem tawm) tau txais qhov concentration ntawm cov kua dej interstitial ntawm medulla; i.e. cov zis ua kom muaj zog.

Yuav ua li cas yog qhov tseem ceeb ntawm kev sib cav sib ceg?

Ib lub tshuab hluav taws xob tiv thaiv yog txheej txheem uas siv lub zog los tsim kom muaj kev sib haum xeeb. Nws pom dav dav hauv qhov xwm txheej thiab tshwj xeeb tshaj yog nyob rau hauv cov kabmob ntawm cov tsiaj.

Puas muaj pes tsawg zaus tib neeg cov zis concentrated nyob rau hauv lub counter tam sim no mechanism?

Qhov muaj xws li kev sib cuam tshuam gradient pab hauv kev yooj yim ntawm cov dej los ntawm cov tubule sib sau ua ke kom pom cov lim dej (cov zis). Tib neeg lub raum tuaj yeem tsim cov zis ze li plaub zaug ntau dua dua qhov pibfiltrate tsim.

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