Qhov sib txawv tseem ceeb ntawm adrenal cortex thiab adrenal medulla yog qhov adrenal cortex yog thaj tsam sab nraud ntawm lub qog adrenal uas zais cov tshuaj hormones steroid thaum adrenal medulla yog qhov nruab nrab ntawm cov qog adrenal uas zais cov epinephrine thiab norepinephrine.
Adrenal gland yog ib lub cev me me uas nyob saum lub raum. Yog li ntawd, muaj ob lub qog adrenal hauv tib neeg. Lawv yog cov qog endocrine, uas tso tawm cov tshuaj hormones sib txawv. Adrenal gland muaj ob qhov tseem ceeb: adrenal cortex thiab adrenal medulla. Adrenal cortex yog thaj tsam sab nraud ntawm lub qog adrenal thaum lub qog adrenal yog thaj tsam sab hauv ntawm lub qog adrenal. Adrenal cortex tsim cov tshuaj steroid thaum adrenal medulla tsim epinephrine thiab norepinephrine.
YAdrenal Cortex yog dab tsi?
Adrenal cortex yog thaj tsam sab nraud ntawm lub qog adrenal. Nws yog daim duab peb sab. Muaj peb txheej hauv lub cortex. Zona glomerulosa yog txheej txheej sab nraud uas nyob 10% ntawm thaj chaw cortex. Zona fasiculata yog nruab nrab txheej, thiab nws yog ib feem ntawm lub adrenal cortex thiab occupies 80% ntawm lub cortex. Zona reticularis yog txheej sab hauv, thiab nws nyob li ntawm 10% ntawm lub cortex.
Daim duab 01: Adrenal Cortex
Adrenal cortex secretes ntau hom steroid hormones. Zona glomerulosa secretes aldosterone, uas yog ib qho tseem ceeb nyob rau hauv reabsorption ntawm sodium ions nyob rau hauv lub distal convoluted tubule. Zona fasiculata secretes cortisol, uas yog qhov tseem ceeb hauv kev ua kom qabzib hauv lub cev. Zona reticularis, ntawm qhov tod tes, secretes androgens, tshwj xeeb tshaj yog testosterone, uas yog txiv neej cov tshuaj hormones.
YAdrenal Medulla yog dab tsi?
Adrenal medulla yog thaj tsam sab hauv ntawm lub qog adrenal. Nws yog tsim los ntawm chromaffin hlwb. Qhov tseeb, lawv yog cov cell lub cev ntawm postganglionic sympathetic paj hlwb neurons. Chromaffin hlwb ntawm adrenal medulla secrete catecholamines hu ua epinephrine thiab norepinephrine, uas npaj lub cev rau thaum muaj xwm txheej ceev, lub thiaj li hu ua "sib ntaus sib tua-los yog-flight" teb. Catecholamines ua haujlwm raws li cov tshuaj hormones thiab cov neurotransmitters ntawm lub paj hlwb. Catecholamines yog lub luag haujlwm tseem ceeb rau kev tswj lub cev cov lus teb rau kev ntxhov siab.
Daim duab 02: Adrenal Gland
Hormones epinephrine thiab norepinephrine qhia lub siab thiab cov leeg pob txha los hloov glycogen rau hauv qabzib thiab nce ntshav qabzib. Tsis tas li ntawd, lawv tseem ceeb hauv kev ua kom lub plawv dhia, mem tes, thiab ntshav siab. Tsis tas li ntawd, cov tshuaj hormones no yog lub luag haujlwm rau kev nthuav dav hauv txoj hlab pa kom nce cov ntshav oxygen.
Dab tsi zoo sib xws ntawm Adrenal Cortex thiab Adrenal Medulla?
- Cortex thiab medulla yog ob qhov tseem ceeb ntawm lub qog adrenal.
- Ob qhov tso tawm cov tshuaj hormones.
Qhov txawv ntawm Adrenal Cortex thiab Adrenal Medulla yog dab tsi?
Adrenal cortex yog thaj tsam sab nraud ntawm lub qog adrenal, thiab nws zais cov tshuaj steroid. Ntawm qhov tod tes, adrenal medulla yog thaj tsam sab hauv ntawm lub qog adrenal, thiab nws secretes amine hormones. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm adrenal cortex thiab adrenal medulla. Ntxiv mus, adrenal cortex nyob 90% ntawm tag nrho cov qog adrenal, thaum adrenal medulla nyob 10% ntawm tag nrho cov qog adrenal. Tsis tas li ntawd, adrenal cortex secretes aldosteron, cortisol thiab androgens thaum adrenal medulla secretes epinephrine thiab norepinephrine.
Cov lus hauv qab no qhia txog qhov sib txawv ntawm adrenal cortex thiab adrenal medulla.
Summary – Adrenal Cortex vs Adrenal Medulla
Adrenal cortex thiab adrenal medulla yog ob qhov tseem ceeb ntawm cov qog adrenal. Adrenal cortex nyob ib feem tseem ceeb ntawm cov qog adrenal, coj 90% ntawm qhov hnyav ntawm adrenal. Nws yog thaj tsam sab nraud ntawm cov qog adrenal uas muaj peb txheej sib txawv. Adrenal medulla yog thaj tsam sab hauv tsim los ntawm chromaffin hlwb. Nws nyob 10% ntawm qhov hnyav ntawm adrenal. Adrenal cortex secretes steroid hormones thaum adrenal medulla secretes amine hormones, tshwj xeeb tshaj yog catecholamines. Yog li, qhov no yog cov ntsiab lus ntawm qhov sib txawv ntawm adrenal cortex thiab adrenal medulla.
