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The human female cervix has been documented anatomically since at least the time of Hippocrates, over 2,000 years ago. The cervix is approximately 4 cm long with a diameter of approximately 3 cm and tends to be described as a cylindrical shape, although the front and back walls of the cervix are contiguous. [ 1 ]
In humans, the uterus is located within the pelvic region immediately behind and almost overlying the bladder, and in front of the sigmoid colon. The human uterus is pear-shaped and about 7.6 cm (3.0 in) long, 4.5 cm (1.8 in) broad (side to side), and 3.0 cm (1.2 in) thick. [2] [3] A typical adult uterus weighs about 60 grams.
The uterus or womb is the major female reproductive organ. The uterus provides mechanical protection, nutritional support, and waste removal for the developing embryo (weeks 1 to 8) and fetus (from week 9 until the delivery). In addition, contractions in the muscular wall of the uterus are important in pushing out the fetus at the time of birth.
The clitoris (especially the glans) is the human female's most sensitive erogenous zone and generally the primary anatomical source of human female sexual pleasure. [58] Sexual stimulation of the clitoris (by a number of means) can result in widespread sexual arousal and, if maintained, can result in orgasm .
The greatest circumference of the head, which corresponds to the plane of the occipitofrontal diameter, averages 34.5 cm (13.6 in), a size too large to fit through the pelvis without flexion. The smallest circumference, corresponding to the plane of the suboccipitobregmatic diameter, is 32 cm (13 in).
Dr. Laura Purdy, chief medical officer at Wisp, a sexual health care group, says that “uterus didelphys is rare,” only accounting for 8% of the congenital anomalies of the female reproductive ...
The fetus begins to lose the support of the cervix when contractions begin. With cervical dilation reaching 10 cm to accommodate the head of the fetus, the head moves from the uterus to the vagina. [82] [88] The elasticity of the vagina allows it to stretch to many times its normal diameter in order to deliver the child. [89]
Human disease uterine disease: female reproductive system disease that is located in the uterus epithelioid trophoblastic tumor: Human disease uterus carcinoma in situ: Human disease uterine natural killer cell: cell type uterine leukocyte: cell type uterine macrophage: cell type uterine stromal fibroblast: cell type uterine lymphocyte: cell type