Puas yog kev txhawb siab txhawb siab ua rau cov kua qaub?
Puas yog kev txhawb siab txhawb siab ua rau cov kua qaub?

Video: Puas yog kev txhawb siab txhawb siab ua rau cov kua qaub?

Video: Puas yog kev txhawb siab txhawb siab ua rau cov kua qaub?
Video: tshaj sawm yaj nkauj hu tu siab heev saib sau ntuj yog huab ntiaj teb yog av, cia kuv ua rau vajtswv 2024, Lub Xya hli ntuj
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Sympathetic stimulation tshwm sim hauv kev tso tawm ntawm noradrenaline, uas ua raws li alpha- thiab beta-adrenergic receptors. Qhov no ua rau cov teebmeem hauv qab no: Txo cov khoom tsim tawm qaub ncaug los ntawm acinar hlwb. Nce protein ntau zais zis.

Tsis tas li ntawd, yog salivary secretion sympathetic lossis parasympathetic?

Cov qog salivary yog innervated, ncaj qha los yog indirectly, los ntawm cov parasympathetic thiab txaus siab caj npab ntawm autonomic lub paj hlwb. Parasympathetic stimulation evokes ib copious ntws ntawm qaub ncaug . Parasympathetic innervation rau salivary qog yog nqa los ntawm cov hlab ntsha cranial.

Qhov thib ob, uas cov hlab ntsha cranial ua rau cov kua qaub tawm? cov hlab ntsha glossopharyngeal

Kuj paub, puas siab puas ntsws nce salivation?

Kev tsim tawm ntawm qaub ncaug yog stimulated ob qho tib si txaus siab lub paj hlwb thiab parasympathetic. Cov qaub ncaug txhawb los ntawm txaus siab innervation yog thicker, thiab qaub ncaug stimulated parasympathetically yog cov kua zoo li. Qhov tshwm sim nce ntshav ntws mus rau acini tso cai rau ntau lawm qaub ncaug.

Puas yog lub paj hlwb sympathetic inhibit salivation?

Cov sympathetic paj hlwb tswj cov qaub ncaug secretion thiab adrenal tso tawm catecholamines rau cov ntshav. Lub teeb stimuli txwv neural kev ua ntawm txaus siab efferents rau salivaiy qog thiab txhawb cov neeg mus rau adrenal medulla.

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