Cervix

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The cervix is the part of the uterus which protrudes into the vaginal cannal. Its function is like that of a gate to the uterus, or womb, where the fetus develops. It also allows menstrual blood to escape the uterus during the normal reproductive cycle of the female, and allows sperm to access the uterus to fertilize an ova, or egg.

Human reproductive system
Female anatomy	Cervix – Clitoris – Clitoral hood – Fallopian tubes – Bartholin's glands – Gräfenberg spot (G-spot) – Hymen – Labia – Mammary glands – Ovaries – Skene's glands – Urethra – Uterus – Vagina – Vulva
Female physiology	Ejaculation – Orgasm – Ovum
Male anatomy	Bulbourethral glands – Corpus cavernosum – Ejaculatory ducts – Epididymis – Foreskin – Frenulum – Glans penis – Penis – Prostate – Rete testis – Scrotum – Seminal vesicles – Seminiferous tubules – Sertoli cell – Spermatic cord – Testicles (testes) – Urethra – Vasa deferentia
Male physiology	Ejaculation – Erection – Orgasm – Semen – Sperm – Testosterone