just as the vagina has the capacity to expand, allowing for the passage of a baby during childbirth, the vagina also has the ability to elongate during intercourse to accommodate a penis. As you mentioned, for some women, the depth from the vaginal opening to the tip of the cervix is 3 to 4 inches when they are not sexually aroused. Other women may have a vaginal depth of five to seven inches. Regardless, during arousal, blood flows to the genital area, and sexual excitement causes the upper two-thirds of the vagina to lengthen by forcing the cervix and uterus to ascend. The vagina also lubricates to help ease penetration.
Some people think that the vaginal canal is a continuously open space. However, this is a misperception. Think of the vaginal canal as if it were a balloon that is not filled with any air. The walls, which have the potential to expand and elongate, gently touch one another. When something is placed inside, they mold around the width and accommodate the length of a penis, tampon, finger(s), or sex toy.
__________________
Help and Hope from advanced practice nurse and therapist, honest intelligent answers.
