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A 5-alpha-reductase deficiency results in atypical development characterized by female phenotype or undervirilized male phenotype with development of the epididymis, vas deferens, seminal vesicle, and ejaculatory duct, but also a pseudovagina. This is because testosterone is converted to the more potent DHT by 5-alpha reductase.
The vas deferens consists of an external adventitial sheath containing blood vessels and nerves, a muscular middle layer composed of three layers of smooth muscle (with a circular muscle layer interposed between two longitudinal muscle layers), and an internal mucosal lining consisting of pseudostratified columnar epithelium (which bears the ...
The Shug, short for "silicon plug", is an example of a non-injectable plug, though there is little to no research on the Shug following 2008. [8] The Shug is composed of two silicon plugs with accompanying nylon tails that attach to the vas deferens wall. It is surgically inserted into the vas deferens and must also be removed surgically.
The Wolffian duct forms the epididymis, vas deferens, ejaculatory duct, and seminal vesicle in the male reproductive system, but essentially disappears in the female reproductive system. [9] The reverse is true for the Müllerian duct, as it essentially disappears in the male reproductive system and forms the fallopian tubes, uterus, and vagina ...
[16] [page needed] The vas deferens passes upward along the side of the testicles to become part of the spermatic cord. [36] The expanded end is the ampulla, which stores sperm before ejaculation. The third part of the duct system is the ejaculatory ducts, which are 1-inch (2.5 cm)-long paired tubes that pass through the prostate gland, where ...
The development of the reproductive system is the part of embryonic growth that results in the sex organs and contributes to sexual differentiation.Due to its large overlap with development of the urinary system, the two systems are typically described together as the genitourinary system.
The HuffPost/YouGov poll consisted of 3,000 completed interviews conducted May 8 to 29 among U.S. adults, including 124 women who are childless and reported not wanting children in the future. It was conducted using a sample selected from YouGov's opt-in online panel to match the demographics and other characteristics of the adult U.S. population.
Each ejaculatory duct is formed by the union of the vas deferens with the duct of the seminal vesicle. [2] They pass through the prostate, and open into the urethra above the seminal colliculus. During ejaculation, semen passes through the prostate gland, enters the urethra and exits the body via the urinary meatus. [3]