Search results
Results from the WOW.Com Content Network
During this time, the single-layered paramesonephric duct epithelium differentiates into other structures, ranging from the ciliated columnar epithelium in the uterine tube to stratified squamous epithelium in the vagina. [8] The paramesonephric ducts and the mesonephric ducts share a majority of the same mesenchyme due to Hox gene expression.
The internal genitalia consist of two accessory ducts: mesonephric ducts (male) and paramesonephric ducts (female). The mesonephric system is the precursor to the male genitalia and the paramesonephric to the female reproductive system. [8] As development proceeds, one of the pairs of ducts develops while the other regresses.
In the female, the paramesonephric ducts persist and undergo further development. The portions which lie in the genital cord [citation needed] fuse to form the uterus and vagina. This fusion of the paramesonephric ducts begins in the third month, and the septum formed by their fused medial walls disappears from below upward.
Female Male Gonad: Ovary: Testicle: Rete ovarii: Rete testis: Paramesonephric ducts (Müllerian ducts) Fallopian tube: Appendix testis: Uterus, cervix, vagina [1] Prostatic utricle: Mesonephric ducts (Wolffian ducts) Epoophoron: Epididymis: Gartner's duct: Vas deferens: Seminal vesicle: Mesonephric tubules: Paroophoron: Paradidymis: Urogenital ...
This page was last edited on 21 May 2011, at 20:10 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply ...
It has been suggested that embryos with a higher expression of Dmrt1 expression develop into males while embryos with a lower expression are led to female development. [ 1 ] In the mouse gonadal primordium, the genital ridge, which forms from intermediate mesoderm, becomes morphologically distinct at E10.5.
Paramesonephric ducts are paired ducts derived from the embryo, and for females develop into the uterus, uterine tubes, cervix and upper two-thirds of the vagina. [6] Embryogenesis of the Müllerian ducts play important roles in ensuring normal development of the female reproductive tract.
The cervix is more tightly connected to surrounding structures than the rest of the uterus. [7] The cervical canal varies greatly in length and width between women or over the course of a woman's life, [3] and it can measure 8 mm (0.3 inch) at its widest diameter in premenopausal adults. [8] It is wider in the middle and narrower at each end.