Video: Dab tsi ua rau cov hypothalamus tso CRH?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Corticotropin- tso tawm tshuaj ( CRH ) yog tso tawm los ntawm hypothalamus qhov twg txhawb nqa anterior pituitary rau tso tawm adrenocorticotropic hormone (ACTH). ACTH tom qab ntawd ua rau nws lub hom phiaj lub cev, lub adrenal cortex.
Ntawm no, dab tsi ua rau kev tso tawm corticotropin tso cov tshuaj hormones?
Nws lub luag haujlwm tseem ceeb yog kev txhawb siab ntawm kev ua haujlwm ntawm pituitary ACTH , raws li ib feem ntawm HPA Axis. Corticotropin - tso cov tshuaj hormones (CRH) yog 41-amino acid peptide muab tau los ntawm 196-amino acid preprohormone. CRH yog secreted los ntawm paraventricular nucleus (PVN) ntawm lub hypothalamus teb rau kev ntxhov siab.
Ib sab saum toj no, yuav ua li cas tshwm sim thaum lub hypothalamus yog stimulated? Ua qhov no, hypothalamus pab txhawb lossis txwv ntau yam ntawm koj lub cev cov txheej txheem tseem ceeb, suav nrog: Lub siab xav thiab lub cev hnyav. Kev zais zais ntawm lub plab thiab cov hnyuv. Kev tsim cov tshuaj uas cuam tshuam rau lub caj pas pituitary kom tso cov tshuaj hormones.
Kuj paub, qhov tshuaj hormone corticotropin txhawb nqa dab tsi?
Adrenocorticotropic Hormone ( ACTH , Corticotropin ) Tshwj xeeb, nws txhawb nqa secretion ntawm glucocorticoids xws li cortisol, thiab muaj Kev tswj me me ntawm kev tso tawm ntawm aldosterone, lwm yam steroid loj tshuaj hormone los ntawm adrenal cortex.
Qhov twg tso cov tshuaj hormones tsim tawm hauv hypothalamus thaum kawg ua rau nce cortisol ntau lawm?
Corticotrophin -releasing hormone yog muab lub npe no vim nws ua rau tso tawm adrenocorticotropic hormone los ntawm pituitary caj pas. Adrenocorticotropic cov tshuaj hormones Nyob rau hauv lem mus rau hauv cov hlab ntsha mus rau lub qog adrenal, qhov uas nws ua rau lub secretion ntawm kev nyuaj siab hormone cortisol.
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Dab tsi ua rau tso tawm CRH?
Nws yog cov tshuaj tso tawm uas yog rau tsev neeg corticotropin-tso tawm. Hauv tib neeg, nws tau nkag los ntawm CRH noob. Nws lub luag haujlwm tseem ceeb yog kev txhawb siab ntawm kev ua haujlwm pituitary ntawm ACTH, uas yog ib feem ntawm HPA Axis. CRH yog zais los ntawm cov kab ke paraventricular (PVN) ntawm hypothalamus hauv kev teb rau kev ntxhov siab