Imveliso

I-Oxytocin, i-hormone ye-peptide kunye ne-neuropeptide, uhlobo lweyeza le-uterine contractile, elinokukhutshwa kwi-pituitary yangasemva yezilwanyana okanye i-synthesized chemically.Ukuba zidityaniswe ngeekhemikhali ezingenayo i-vasopressin kwaye azinampembelelo yoxinzelelo.

Inokukhetha ngokukhetha i-uterine muscle egudileyo kwaye yomeleze ukucutheka kwayo.Isibeleko sesibeleko sinovelwano kakhulu kwi-oxytocin ngenxa yokunyuswa kokukhuselwa kwe-estrogen.Isibeleko esingekavuthwa asinakusabela kule mveliso.Impendulo yesibeleko kwi-oxytocin yayiphantsi kwithuba lokuqala okanye eliphakathi kwithuba leenyanga ezintathu zokukhulelwa, kodwa yanda ngokuthe ngcembe kwithuba lekota yokugqibela yokukhulelwa, yaza yafikelela kwelona nani liphezulu ngaphambi kokubeleka.

I-dose encinci inokomeleza ukucutshungulwa kwesingqisho se-muscle egudileyo ezantsi kwesibeleko, ukomeleza ukunyanzeliswa kwayo, ukukhawulezisa ukuphindaphinda kwe-contraction, kunye nokugcina i-polarity kunye ne-symmetry efana nokuhanjiswa kwendalo.Ke ngoko, isetyenziselwa uklinikhi ukwenza umsebenzi okanye i-oxytocia.

Idosi enkulu yenza isivumelwano semisipha ye-uterine ngendlela ye-tetanic.Isetyenziselwa uklinikhi ukucinezela imithambo yegazi phakathi kwemicu yezihlunu, ukuthintela ukopha kwangemva kokubeleka kunye nokungaphelelanga kokuphuma kwangemva kokubeleka.Ikhuthaza i-lactation, iyancipha i-mammary duct, kwaye ikhuthaza ukukhutshwa kobisi kwibele.Nangona kunjalo, ayikwazi ukunyusa ukukhutshwa kobisi, kodwa inokukhuthaza kuphela ukukhutshwa kobisi.

I-Oxytocin isoloko idityaniswa nokulungiswa kwe-ergot ukunyanga ukopha kwasemva kokubeleka.Isetyenziselwa ikakhulu ukuzala ngexesha lokukhulelwa kade kunye nokulibaziseka kokubeleka okubangelwa yi-atoni yesibeleko ngexesha lokubeleka.Ikwasetyenziselwa uvavanyo lwe-oxytocin sensitivity kunye nokunceda ekukhupheni ubisi lwasemva kokubeleka.

I-Oxytocin ikhutshelwa kumjikelezo wegazi njengehomoni ekuphenduleni umsebenzi wesondo kunye nangexesha lokubeleka.Ikwafumaneka nakwifomu yamayeza.Kuyo nayiphi na indlela, i-oxytocin ivuselela ukufinyela kwesibeleko ukukhawulezisa inkqubo yokuzala.Ukuveliswa kunye nokukhutshwa kwe-oxytocin kulawulwa yindlela efanelekileyo yokuphendula, apho ukukhutshwa kwayo kokuqala kukhuthaza ukuveliswa kunye nokukhululwa kwe-oxytocin eyongezelelweyo.