Qhov txawv ntawm Endocrine vs Exocrine Glands
Gland yog cov qauv tshwj xeeb uas zais ntau yam tshuaj xws li enzymes, tshuaj hormones, thiab metabolites. Muaj ob hom qog nqaij hlav hauv lub cev hu ua endocrine qog thiab qog exocrine. Thoob plaws hauv lub embryo txoj kev loj hlob, cov qog endocrine tsis muaj ducts thiab nyob twj ywm raws li cov ntaub so ntswg. Yog li, nws zais cov tshuaj lom neeg ncaj qha rau hauv cov ntshav, thaum lub caj pas exocrine zais nws cov khoom rau hauv cov kav dej. Txawm li cas los xij, qee lub qog yuav muaj cov haujlwm endocrine thiab exocrine xws li txiav txiav (Taylor et al, 1998).
YEndocrine Glands
Endocrine system yog tsim los ntawm ntau cov qog endocrine. Cov qog endocrine muaj cov yam ntxwv tshwj xeeb xws li tso cov tshuaj hormones rau hauv cov hlab ntsha, tsis muaj ducts (yog li, nws yog hu ua ductless glands). Yog li ntawd, cov qog no muaj cov ntshav txaus nrog ntau cov hlab ntsha. Cov kab mob endocrine thiab lub paj hlwb ua haujlwm hauv kev sib koom ua ke los tswj ntau lub cev kev ua ub no. Hypothalamus, pituitary caj pas (Posterior thiab anterior), adrenal cortex yog ib co ntawm cov tib neeg endocrine qog.
Muaj plaub hom vertebrate cov tshuaj hormones, uas ua rau lub hom phiaj hlwb (Taylor li al, 1998). Peptides thiab proteins, derivative ntawm amines, steroids thiab fatty acids yog lawv. Cov qog endocrine tso tawm cov tshuaj hormones raws li cov lus teb rau qib ntawm cov metabolite tshwj xeeb hauv cov ntshav. Piv txwv li, pancreas tso tawm cov tshuaj insulin vim muaj cov piam thaj ntau dua. Tsuas yog qhov xwm txheej ntawd, cov qog endocrine zais cov tshuaj hormones vim muaj lwm cov tshuaj hormones lossis vim muaj kev txhawb nqa los ntawm cov neurons.
YExocrine Glands
Exocrine caj pas yog ib caj pas uas zais cov tshuaj lom neeg rau hauv cov ducts. Raws li ib tug tshwm sim, hws caj pas thiab salivary qog. Hauv cov qog ua kua qaub, qaub ncaug yog tsim nyob rau hauv lub caj pas, thiab nws secrets rau hauv cov qaub ncaug duct thiab mus rau saum npoo. Cov qog ua kua qaub, hws qog, qog mammary, thiab qog adrenal yog qee yam piv txwv rau cov qog qog nqaij hlav. Muaj ob hom exocrine qog, hom yooj yim thiab hom compound. Tubular, branched tubular, thiab coiled tubular yog piv txwv rau hom yooj yim ntawm exocrine qog thiab tubular thiab alveolar yog cov piv txwv rau compound exocrine qog.
Cov qog exocrine no muaj peb txoj hauv kev sib txawv ntawm kev zais cov khoom rau hauv ducts. Merocrine, holocrine, thiab apocrine yog peb txoj kev sib txawv.
Qhov txawv ntawm Endocrine Glands thiab Exocrine Glands yog dab tsi?
• Qhov sib txawv tseem ceeb ntawm cov qog endocrine thiab exocrine caj pas yog tias, lub caj pas endocrine tsis muaj ducts thiab tseem ua cov ntaub so ntswg.
• Yog li, cov qog endocrine zais cov tshuaj lom neeg ncaj qha rau hauv cov hlab ntshav, thaum lub qog exocrine zais nws cov khoom rau hauv cov kav dej.
• Exocrine qog zais lawv cov khoom rau hauv ib puag ncig sab nraud, tab sis cov qog endocrine tso lawv cov khoom rau hauv ib puag ncig sab hauv.
• Cov tshuaj hormones tsim los ntawm cov qog endocrine ncig los ntawm cov hlab ntshav thiab hla lub cev thiab ua rau lub hom phiaj, thaum cov khoom ntawm cov qog exocrine tsis ncig thoob plaws lub cev.
• Cov qog endocrine no muaj cov ntshav ntau dua li cov qog exocrine.
• qog Exocrine muaj cov qauv ntau dua li cov qog endocrine.
• Merocrine, holocrine, thiab apocrine yog peb txoj hauv kev sib txawv ntawm kev zais cov khoom ntawm cov qog exocrine rau hauv cov ducts, tab sis cov qog endocrine tsis muaj cov kab ke zoo li no.
• Cov lus teb ntawm cov qog endocrine qeeb dua li cov qog exocrine vim nws taug kev los ntawm cov ntshav.
• Cov kab mob endocrine thiab lub paj hlwb ua haujlwm hauv kev sib koom ua ke los tswj ntau lub cev lub cev, tab sis exocrine system tsis ua.
