The Bartholin’s glands, found at the vaginal opening, secrete mucus to lubricate the vagina during arousal. The vagina is a muscular tube averaging between three and five inches in length in adult women. Mucous membranes line the walls of the vagina, and not only offer protection but help maintain moisture. The vagina’s ability to contract and expand allows it to accommodate the birth of a child and partake in sexual intercourse. The hymen covers the vaginal opening. The narrow entryway between the vagina and the uterus is called the cervix. Fetuses develop in the pear-shaped uterus, which is connected to the egg-producing ovaries by the fallopian tubes.
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