I-pituitary gland iyona nto ibaluleke kakhulu kwi-endocrine gland. Itholakala kwisiseko sobuchopho. Ukususela kwimpembelelo yezinto zangaphandle, ukhuselwe kumacala onke ngamathambo. I-pituitary gland ineemisebenzi ethile, ukusetyenziswa okuchanekileyo kubaluleke kakhulu ekusebenzeni ngokuqhelekileyo komzimba.
Imisebenzi emithathu ephambili ye-pituitary gland
Enyanisweni, zikhulu kakhulu. Kodwa okona mkhulu ukwamkelwa ukuthatha imisebenzi emithathu kuphela:
- I-pituitary gland iyenaxanduva lokusebenzisa ukulawula phezu kweengqungquthela ze-endocrine eziseleyo: i-thyroid gland, i-adrenal gland, kunye neengcingo zesini.
- Ulungelelanisa imisebenzi yamalungu ahlukeneyo: iintso, isisu, izilonda ezincinci.
- Siyabulela kwi-pituitary ukuba izitho zikhula kwaye zivuthiwe.
Ingubo ye-pituitary yenza ntoni le mi sebenzi? Yonke into ilula: insimbi ivelisa i-hormone ekhethekileyo yokubonisa. Ezi zilandelayo zichaphazela ezinye izitho. Okokuthi, enyanisweni, umsebenzi oyintloko we-pituitary gland ukuvelisa amahomoni.
IiHormoni ze-pituitary gland kunye nemisebenzi yazo
Intsimbi ihlukaniswe ibe ngamalungu amaninzi. Kuzo zonke izixhobo ezithile ziveliswa:
- I-hormone ye-thyrotropic ilawula ukuveliswa kwe-T3 kunye ne-T4 - i-hormone ye-thyroid. Bona nabo bajongene neenkqubo zokuxilonga kunye nokusebenza okufanelekileyo kwezitho zesisu, isifo senhliziyo, isistim.
- Umgaqo wenkqubo yokuzala - yiyo i- horonone ye - gonadotrophic pituitary.
- Izinto ze-Adrenocorticotropic zifunekayo ukuze kuhlanganiswe kunye nokucinywa kwe- cortisol , i-cortisone, kunye ne-corticosterone eveliswe kwi-correl.
- Amahomoni okukhula ngamahomoni okukhula.
- Ukukhutshwa kwezilwanyana zomama , iinkqubo zokukhula ngotshintsho , ukulungelelaniswa kwenkqubo yokutya, izixhobo ze-luteotropic ziphendula.
- I-Vasopressin , eyenziwa kwi-lobe yangemva kwe-pituitary gland, isebenza njengomlawuli weendlela eziqhelekileyo zokusebenza kweentso, intliziyo kunye nenkqubo yesantya.
- I-Beta-endorphin yenye yeyona mininzi yemisebenzi. Le hormone inceda u-anesthetize, inceda ekunciphiseni uxinzelelo, unciphisa ithoni yesimiso senzwa, ukuba kuyimfuneko ukunciphisa ukutya.
- Akukho msebenzi ophantsi kunye ne- oxytocin . Ekuzalweni, ubukhulu bokuqhaqha kwe-uterine buxhomekeke kuyo. Ukwabonelela ngemveliso yobisi ngexesha lokutya . Kwaye ixanduva lokuvusa isondo.
Njengoko ubona, inani elikhulu leenkqubo ezibalulekileyo lixhomekeke kwisigane ubukhulu bepea enkulu.