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Penile–vaginal intercourse, or vaginal intercourse, is a form of penetrative sexual intercourse in human sexuality, in which an erect penis is inserted into a vagina. [1] Synonyms are: vaginal sex , cohabitation , coitus ( Latin: coitus per vaginam ), (in elegant colloquial language) intimacy , or (poetic) lovemaking .
In gross anatomy, the bladder can be divided into a broad fundus (base), a body, an apex, and a neck. [5] The apex (also called the vertex) is directed forward toward the upper part of the pubic symphysis, and from there the median umbilical ligament continues upward on the back of the anterior abdominal wall to the umbilicus.
The urethrovaginal muscle fibers wrap around the vagina and urethra and contraction leads to constriction of both the vagina and the urethra. The origin of the compressor urethrae muscle is the right and left inferior pubic ramus and it wraps anteriorly around the urethra so when it contracts, it squeezes the urethra against the vagina. The ...
The vagina is a fibromuscular (made up of fibrous and muscular tissue) canal leading from the outside of the body to the cervix of the uterus. It is also referred to as the birth canal in the context of pregnancy. The vagina accommodates a penis during sexual intercourse.
The internal surface of the ilium showing where the muscles supporting the vagina insert and terminate. The vagina is attached to the pelvic walls by endopelvic fascia. The peritoneum is the external layer of skin that covers the fascia. This tissue provides additional support to the pelvic floor.
The absence of vaginal rugae seen in the normal vagina of a healthy woman may be an indication of a prolapsed bladder (cystocele) or rectocele. [13] [12] An enterocele, or bulging of the bowel into the vagina can also cause vaginal rugae to disappear. [16] The absence of vaginal rugae may also be an indicator of pelvic organ prolapse.
The female urethra is located between the bladder neck to the external urethral orifice and is behind the symphysis pubis. [4] The urethral wall is composed of an inner epithelial lining, a sub-mucosa layer containing vascular supply, a thin fascial layer, and two layers of smooth muscle.