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The cervix (pl.: cervices) or cervix uteri is a dynamic fibromuscular sexual organ of the female reproductive system that connects the vagina with the uterine cavity. [1] The human female cervix has been documented anatomically since at least the time of Hippocrates , over 2,000 years ago.
The anterior and posterior columnae rugae are transverse vaginal support structures between which the transverse rugae exist. The cross section of the vagina normally forms a shape that resembles the letter 'H' due to these structures. [6] Vaginal rugae disappear in older women and those with an estrogen deficiency. [7]
The fornices of the vagina (sg.: fornix of the vagina or fornix vaginae) are the superior portions of the vagina, extending into the recesses created by the vaginal portion of cervix. There is an anterior fornix and a posterior fornix. The word fornix is Latin for 'arch'.
Each fallopian tube leaves the uterus at an opening at the uterine horns known as the proximal tubal opening or proximal ostium. [9] The tubes have an average length of 10–14 centimeters (3.9–5.5 in) [4] that includes the intramural part of the tube.
The cervical canal is generally lined by "endocervical mucosa" which consists of a single layer of mucinous columnar epithelium. However, after menopause, the functional squamocolumnar junction moves into the cervical canal, and hence the distal part of the cervical canal may be lined by stratified squamous epithelium (conforming to a "type 3 transformation zone").
The cervix is the neck of the uterus, the lower, narrow portion where it joins with the upper part of the vagina. It is cylindrical or conical in shape and protrudes through the upper anterior vaginal wall. Approximately half its length is visible, the remainder lies above the vagina beyond view.
The uterine arteries reach the margins of the cervix in this fibrous tissue, while on either side the ureter runs downward and forward in it at a distance of about 2 cm. from the cervix. Posteriorly, the supravaginal cervix is covered by peritoneum, which is prolonged below on to the posterior vaginal wall, when it is reflected on to the rectum ...
The vagina within the female genitals. The dimensions and shape of human vaginas are of great importance in medicine and surgery, in addition to their relevance to sexual pleasure and childbirth; there appears to be no one way, however, to characterize the vagina's size and shape. [1]