The body of the clitoris is composed of 2 channels of vessels and nerve endings that function as erectile tissue, the corpora cavernosa. The ovum travels from the ovary to the fallopian tube, where it may be fertilized before reaching the uterus. Their primary function is to transport sperm toward the egg, which is released by the ovary, and then to allow passage of the fertilized egg back to the uterus for implantation. A large plexus of blood vessels is also present. The ovarian artery and vein enter and exit the ovary at the hilum. The final segment, furthest from the uterus, is the infundibulum. The second segment is the ampulla, which becomes more dilated in diameter and is the typical place of fertilization. Some women experience orgasm solely from sexual intercourse, whereas other women require concurrent stimulation of the external parts of the clitoris in order to reach orgasm during sexual intercourse, and some women never experience orgasm in intercourse under any conditions. A cross-section of the ovary reveals many cystic structures that vary in size.
These allow easy distention, especially during child bearing. Uterine anomalies are often detected during evaluation for infertility. Vulva The vulva is the collective name for the external female genitalia located in the pubic region of the body. Vestibular bulbs Finally, the vestibular bulbs are 2 masses of erectile tissue that lie deep to the bulbocavernosus muscles bilaterally. The production of milk begins prior to birth under the control of the hormone prolactin. View Media Gallery Mons pubis The mons pubis is the rounded portion of the vulva where sexual hair development occurs at the time of puberty. The uterus can be divided into 2 parts: After a two-week period of rapid cell division known as the germinal period of development, the zygote forms an embryo. We use an unconventional approach to investigate the proposed relationship between variation in women's genitals and orgasm during intercourse. When stimulated, Bartholin glands located beside the vaginal opening secrete a thick fluid that supplies lubrication for intercourse. By contrast, women's orgasms in intercourse are highly variable and are under little selective pressure as they are not a reproductive necessity.. Lymphatic drainage of the ovary is primarily to the lateral aortic nodes; however, the iliac nodes may also be involved. The uterine tubes enter the uterine cavity bilaterally in the superolateral portion of the cavity. An anatomical explanation for this disparity has also been proposed such that variation in the distance between a woman's clitoral glans and her vagina predicts the likelihood that she will experience orgasm in intercourse Narjani, A multiparous uterus may weigh slightly more than this, with an upper limit of approximately g. Between these 2 is the isthmus, a short area of constriction. Although sexual arousal precedes orgasm in women, the specific sexual stimulation that triggers orgasm varies greatly among women. Uterus The uterus is the inverted pear-shaped female reproductive organ that lies in the midline of the body, within the pelvis between the bladder and the rectum. Within each breast, 15 to 20 clusters of mammary glands become active during pregnancy and remain active until milk is no longer needed. As soon as an infant is weaned, prolactin and milk production end soon after. External Female Genital Organs The area between the opening of the vagina and the anus, below the labia majora, is called the perineum. The external portion of the cervix that lies within the vagina is composed of stratified squamous epithelium. Supply is through the ovarian, hypogastric, and aortic plexuses. The visceral muscles of the uterus contract during childbirth to push the fetus through the birth canal. The cervix is cylindrical in shape, with an endocervical canal located in the midline, allowing passage of semen into the uterus. Lymphatic drainage of the cervix is complex. Superior view of pelvic organs.
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