Dina sistim[[Sistim baranahan awéwé|sistem baranahan awéwé]] sérviks mibanda sawatara fungsi. Salah sahiji fungsi utama sérviks nyaéta pikeun masilitasan leumpangna [[spérma]] kana [[rongga pianakan]].<ref>{{Cite journal|last=Martyn|first=F.|last2=McAuliffe|first2=F. M.|last3=Wingfield|first3=M.|date=2014-10-10|title=The role of the cervix in fertility: is it time for a reappraisal?|url=https://academic.oup.com/humrep/article/29/10/2092/648095|journal=Human Reproduction|language=en|volume=29|issue=10|pages=2092–2098|doi=10.1093/humrep/deu195|issn=0268-1161}}</ref> Prosés kieu téh bisa kajadian upamana os éksternal jeung os internal dirubakkeun.<ref>{{Cite web|url=http://www.embryology.ch/anglais/dbefruchtung/weg02.html|title=The path of the sperm cells to the oocyte - capacitation; cervical canal|website=www.embryology.ch|accessdate=2020-01-13}}</ref> Lian ti masilitasan leumpangna spérma kana pianakan, fungsi séjén tina ieu sérviks nyaéta pikeun ngurusan sarta ngajaga sterilitas saluran baranahan awéwé bagéan luhur.<ref name=":3">{{Cite journal|last=De Tomasi|first=Jorgelina Barrios|last2=Opata|first2=Michael Makokha|last3=Mowa|first3=Chishimba Nathan|date=2019-04-17|title=Immunity in the Cervix: Interphase between Immune and Cervical Epithelial Cells|url=https://www.hindawi.com/journals/jir/2019/7693183/|journal=Journal of Immunology Research|language=en|volume=2019|pages=1–13|doi=10.1155/2019/7693183|issn=2314-8861}}</ref> Bagéan sérviks ogéjeung sakumna struktur anu dipupusti téh kudu dipastikeun stéril salawasna.<ref name=":3" /> Antukna mah nyaéta pikeun nangtayungan rongga pianakan jeung saluran génital bagéan luhur lianna ku cara nyegah invasi [[Baktéri|bakteri]].<ref name=":3" /> Ieu lingkungan téh dilindungna ku luruhna [[éndométrium]], cairan sérviks yanganu kandel sarta os éksternal anu heureut.<ref name=":3" />
