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The vagina receives the [[penis]] during sexual intercourse. To accommodate smoother penetration of the vagina during sexual intercourse or other sexual activity, vaginal moisture increases during sexual arousal in human females. This increase in moisture provides vaginal lubrication, which reduces friction. The texture of the vaginal walls creates friction for the peni] during sexual intercourse and stimulates it toward ejaculation, enabling fertilization.
==Function of the male foreskin==
Warren & Bigelow (1994) reported the [[foreskin]] "provides slack skin on the shaft of the erect penis allowing it to glide within its own sheath of skin during intercourse. This provides for more enjoyable intercourse for both partners and avoids problems with vaginal dryness."<ref name="warren1994">{{REFjournal
|last=Warren
|first=John
|author-link=John Warren
|last2=Bigelow
|first2=Jim
|author2-link=Jim Bigelow
|etal=no
|title=The case against circumcision
|trans-title=
|language=English
|journal=Br J Sex Med
|location=
|date=1994-09
|volume=
|issue=
|pages=6-8
|url=http://www.cirp.org/library/general/warren2/
|archived=
|quote=
|pubmedID=
|pubmedCID=
|DOI=
|accessdate=2020-10-18
}}
</ref>
{{SEEALSO}}