Mienzaniso yeMibvunzo Inokurukura Maitiro Ekuita Kwemahormone
Mahormone mamorekuru akakosha anokanganisa chinenge chikamu chese chezvipenyu. Anogadzirwa nemasero eendocrine uye anoburitswa muropa kuti asvike nhengo dzakasiyana siyana nematishu. Homoni yega yega ine basa rayo, uye kudyidzana kwayo kunodzora maitiro akasiyana-siyana emuviri. Kuti tinzwisise izvi zviri nani, ngationgororei mimwe mienzaniso inoratidza mashandiro ekushanda kwemahormone tokurukura nezvawo.
Mubvunzo 1: Tsanangura kuti insulin yehormone inoshanda sei mumuviri uye kuti inoita sei pakuchinja kweglucose mumuviri.
Kukurukurirana:
Insulin ihormone yepeptide inogadzirwa nemasero e beta ari muzvitsuwa zveLangerhans mupancreas. Iyi hormone inoita basa guru mukugadzirwa kweglucose. Basa rayo guru nderekudzikisa huwandu hweglucose muropa nekukurudzira kutorwa kweglucose mumasero, kunyanya ari muchiropa, mutsandanyama, uye mumafuta.
Kana munhu akadya chikafu chine makabhohaidhiretsi, huwandu hweshuga muropa hunokwira. Kuwedzera uku kunoita kuti pancreas iburitse insulin. Insulin inozobatana nema insulin receptors ari pa membrane yesero, zvichikonzera maitiro akasiyana-siyana mukati mesero. Chimwe chezviitiko izvi ndiko kutamiswa kweGLUT4, chinhu chinotakurira glucose, kuenda pamusoro pesero, zvichiita kuti glucose ipinde musero.
Muchiropa, insulin inosimudzira kugadzirwa kweglycogen kubva muglucose kuti ichengetedze simba kwenguva refu. Kusiyana neizvi, insulin inodzivisa gluconeogenesis uye glycogenolysis, kuumbwa kweglucose itsva kubva kune zvisiri makabhohaidhiretsi uye kuputsika kweglycogen kuita glucose, zvichiteerana.
Pamusoro pezvo, insulin inokanganisawo metabolism yemafuta nemapuroteni. Mumafuta, insulin inodzivirira lipolysis, kuputsika kwemafuta, uye inokurudzira lipogenesis, kuumbwa kwemafuta. Mutsandanyama, insulin inowedzera kunyudzwa kwemaamino acid uye kugadzirwa kwemapuroteni.
Mubvunzo 2: Mahormone ethyroid anokanganisa sei metabolism yekutanga uye kukura kwemuviri?
Kukurukurirana:
Mahormone ethyroid, anosanganisira thyroxine (T4) uye triiodothyronine (T3), anogadzirwa uye anoburitswa negland re thyroid. Mahormone ese ari maviri ane iodine uye anoita basa rakakosha mukudzora mashandiro emuviri uye kukura kwemuviri.
Mahormone ethyroid anokanganisa metabolism yebasal nekuwedzera basal metabolic rate (BMR), inova huwandu hwemacalorie anodiwa nemuviri kuti uite mabasa ekutanga panguva yekuzorora. Izvi zvinoitwa nekuwedzera kushandiswa kweokisijeni uye kugadzirwa kwekupisa mumasero, kunyanya mumatishu anoshanda sechiropa netsandanyama. Mahormone ethyroid anowedzera kugadzirwa kweprotein nekuora, pamwe necarbohydrate nemafuta metabolism, zvese izvi zvinobatsira kuwedzera BMR.
Mahormone ethyroid anoita basa guru mukukura kwemasero uye kusiyanisa kwawo panguva yekukura. Anokosha pakukura kwakajairika kwetsinga dzeropa, kunyanya panguva yekusununguka uye yehudiki. Kushomeka kwemahormone ethyroid panguva yekukura kunogona kukonzera kunonoka kwepfungwa nemuviri, chirwere chinozivikanwa se cretinism.
Mubvunzo 3: Nzira yekupindura isina kunaka inodzora sei kuburitswa kwehomoni inonzi cortisol mumuviri?
Kukurukurirana:
Cortisol ihormone yeglucocorticoid inoburitswa neadrenal cortex. Cortisol ine mabasa akasiyana-siyana, anosanganisira kudzora kushandiswa kweglucose mumuviri, kudzvinyirira mashandiro emuviri, uye kubatsira muviri kupindura kushushikana.
Kuburitswa kweCortisol kunodzorwa kuburikidza nemaitiro ekusagadzikana anosanganisira hypothalamus nepituitary gland, inozivikanwa sehypothalamic-pituitary-adrenal (HPA) axis. Maitiro aya anotanga nekuburitswa kwecorticotropin-releasing hormone (CRH) kubva kuhypothalamus, iyo inosimudzira anterior pituitary gland kuti iburitse adrenocorticotropic hormone (ACTH). ACTH inobva yatenderera kuenda kuadrenal cortex, ichikurudzira kuburitswa kwecortisol.
Kana huwandu hwe cortisol hukakwira, homoni iyi inopa mhinduro isina kunaka ku hypothalamus ne anterior pituitary gland, zvichideredza kuburitswa kwe CRH ne ACTH. Izvi zvinopedzisira zvaderedza kugadzirwa kwe cortisol, zvichichengetedza huwandu hwehomoni mumuviri.
Kana nzira iyi yekupindura ikakanganiswa, semuenzaniso nekushushikana kwenguva refu kana kukuvara kwechikamu chimwe cheHPA axis, izvi zvinogona kutungamira mukugadzirwa kwecortisol yakawandisa kana kwenguva refu, izvo zvinogona kuva nemigumisiro yakaipa pahutano.
Mubvunzo 4: Ndeipi basa rehomoni inonzi aldosterone mukugadzirisa BP uye kuenzana kwemvura mumuviri?
Kukurukurirana:
Aldosterone ndiyo hormone huru yemineralocorticoid inogadzirwa ne zona glomerulosa yeadrenal cortex. Iyi hormone inoita basa guru mukuchengetedza sodium, potassium, uye BP yakaenzana.
Aldosterone inoshanda zvakanyanya pamatubhu eitsvo ari kure. Hormone iyi inokurudzira kutorwazve kwe sodium nemvura muropa, izvo zvinobatsira kuwedzera huwandu hweropa uye, pakupedzisira, BP. Munguva iyi, potassium inoburitswa muropa, zvichibatsira kuchengetedza chiyero chakakodzera chemaion mumuviri.
Sisitimu ye renin-angiotensin-aldosterone (RAAS) inzira yekuchinja mahormone inodzora kuburitswa kwealdosterone. Kana BP yadzikira, itsvo dzinoburitsa enzyme inonzi renin, iyo inoshandura angiotensinogen kuita angiotensin I. Angiotensin I inobva yashandurwa kuita angiotensin II, iyo inosimudzira kuburitswa kwealdosterone uye inokonzera kuvharika kweropa, zvichiita kuti BP iwedzere.
Kusarongeka kwemuviri muropa iri kunogona kukonzera matambudziko eBP, akadai seBP inokonzerwa nehyperaldosteronism, uko kune kugadzirwa kwakanyanya kwealdosterone.
Mhedziso:
Maitiro ekushanda kwemahormone akaomarara uye akabatana, zvichikanganisa chikamu chose chekushanda kwemuviri. Kunzwisisa mashandiro emahormone kunogona kubatsira mukuongorora nekugadzirisa zvirwere zvakasiyana-siyana. Mumuenzaniso wematambudziko ari pamusoro apa, takaongorora mashandiro anoita insulin, thyroid, cortisol, uye aldosterone mumuviri, zvichipa ruzivo rwemabasa azvo akakosha mukuchengetedza homeostasis.
