Renin, enzyme secreted los ntawm lub raum(thiab, tejzaum nws, los ntawm placenta) uas yog ib feem ntawm lub cev lub cev uas tswj cov ntshav siab. Hauv cov ntshav, renin ua rau cov protein hu ua angiotensinogen, ua rau tso tawm angiotensin I.
renin ua haujlwm hauv lub raum li cas?
Renin, uas yog tso tawm feem ntau los ntawm ob lub raum, txhawb kev tsim cov angiotensin hauv cov ntshav thiab cov ntaub so ntswg, uas ua rau nkoos tso tawm aldosterone los ntawm adrenal cortex. Renin yog ib qho enzyme proteolytic uas tso tawm rau hauv cov hlab ntsha los ntawm ob lub raum.
renin muaj nuj nqi yog dab tsi?
Renin, tseem hu ua angiotensinogenase, yog aspartate protease koom nrog hauv renin-angiotensin aldosterone system (RAAS), uas tswj lub cev dej tshuav thiab qib ntshav siab Yog li, nws tswj lub cev txhais tau tias cov ntshav siab. Renin yog los ntawm juxtaglomerular raum hlwb.
renin pom nyob qhov twg?
Renin yog ib qho enzyme tsim hauv lub raum los ntawmlub cev juxtaglomerular, ib pawg hloov kho ntawm cov leeg nqaij leeg nyob hauv cov hlab ntsha afferent nqa ntshav mus rau glomerulus (Fig. 8.12).
Angiotensin II ua rau lub raum qhov twg?
Nyob rau hauv cov tubule sib ze ntawm lub raum, angiotensin II ua kom nce Na-H pauv, nce sodium reabsorption. Kev nce qib ntawm Na hauv lub cev ua rau nce osmolarity ntawm cov ntshav, ua rau muaj kev hloov pauv ntawm cov kua dej mus rau hauv cov ntshav ntim thiab qhov chaw extracellular (ECF).
