Ƙaddamar da kiyayewa na ciki yana yiwuwa ne saboda aiki na jiki na jiki mai rawaya - glandar wucin gadi na ɓoye na ciki, wanda kafin mako 20 ya samar da abin da ake kira hawan ciki - progesterone. Bayan wannan lokacin, an sanya wannan aikin zuwa ga mahaifa.
An nuna aikin aikin progesterone don tabbatar da fadadaccen nauyin aikin aikin na endometrium, yana barin bayan haɗuwa da kwai don yin "saukowa" daidai daga cikin ƙwayar fetal a cikin kogin uterine (implantation). Lokacin da haihuwa ya auku, aikin hormone shine don hana "kin amincewa" na amfrayo ta wajen sarrafa jigilar hanzarin maganin yaduwanci don hana ƙaddamar da haila. Bugu da ƙari, yana hana sabuwar ƙwayar halitta. Don fahimtar yadda har jikin jikin jiki yake warkar da aikinsa na samar da ma'auni na hormonal a lokacin daukar ciki, ana nazarin girman glandon "rawaya".
Adadin hormones da ke samar da jikin rawaya, yana ƙayyade girmanta. Bugu da kari, canje-canje a cikin tushen jigilar hormonal ya kai ga gaskiyar cewa a lokacin lokuta daban-daban na ciki ba su da mahimmanci: a farkon matakan, jikin rawaya ya fara girma, daga bisani kuma - a cikin makonni 16-20 na ciki - ya zama karami kuma a hankali ya ɓace, yana ba da iko ga ƙwayar, kamar yadda yake lura a sama.
Girman al'ada na jikin rawaya
Yawancin jiki na jiki a lokacin daukar ciki shine 10-30 mm a diamita. Halaye cikin mafi girma ko ƙaramin iyaka daga wannan tasirin dabi'u suna nuna yanayi kamar insufficiency ko cyst na jiki mai launin fata, wanda yake buƙatar gyarawa da kuma daidaitawa na matakin karuwa a cikin jikin mace. Saboda haka, alal misali, ɓarna ko rashin ƙarfi a cikin ƙwayar cuta ta hanyar daukar nau'in tayi zai iya haifar da ba a ɗauka a cikin matakai na lokaci don kawar da ganewar asalin rawaya jiki ba. Babu ƙananan ƙarfin ƙwayar cuta, wanda yake nuna karamin jikin jiki (har zuwa 10 mm a diamita), za'a iya kara da amfani da progesterone dauke da shirye-shirye (Dufaston, Utrozhestan).
Jigon jikin jiki na jiki a lokacin daukar ciki shine ƙaddamarwa mai zurfi, girmansa a cikin diamita zai iya kaiwa har zuwa 6 cm. Wannan ba ya da wata barazana, tun da yake, duk da girmansa, jikin jiki yana ci gaba da samar da kwayar cutar. Yanayin damuwa zai iya zama damuwa ko tare da ɗanɗana shan wahala a cikin ƙananan ciki. Yawanci, yawan ya kamata ya ɓace a kan kansa, amma duk da haka, don kaucewa rikitarwa (zub da jini, maye gurbin jiki), kulawa mai mahimmanci game da yanayinsa yana buƙata. Sabili da haka, a lokacin sauyawa na ayyuka zuwa ƙananan ƙwayoyin, rawaya jiki yana buƙatar mahimmanci jarrabawa.