Joins the seminal vesicle duct to form the ejaculatory duct, which then drains into the veromontanum Muscular tube typically 45 cm long and has a 2.5 mm diameter Rete testis: gives rise to 15–20 efferent ductulesĮfferent ductules unite to form the convoluted duct of the epididymisīecomes the vas deferens at the end of the tail Forms the rete testis inside the testis mediastinum Seminiferous tubules: contain germ cells and sertoli cells. Leydig cells: main source of T production It is divided by fibrous septa into many lobules containing seminiferous tubules Veromontanum: small elevation of the posterior wall of the membranous urethra, related to ejaculatory ducts, prostatic Somatic sensation: pudendal nerve (S2-S4)Īutonomic nerve fibers: cavernous nerves (pelvic plexus) contain both sympathetic (hypogastric plexus) andįour segments: prostatic urethra, membranous urethra (passes through the urogenital diaphragm), bulbar urethra,Īnd penile urethra (ends with a small dilatation at the fossa navicularis near the meatus)Ĭowper's glands: located on both sides of the membranous urethra and open in the bulbar urethra Main blood supply: internal pudendal artery Then, we describe the physiology of orgasm and ejaculation detailing the neuronal, neurochemical, and hormonal control of the ejaculation process.Ĭomposed of three chambers: paired corpora cavernosa (erectile bodies) and a midline ventral corpus spongiosum In this article, we summarize the current literature on the physiology of orgasm and ejaculation, starting with a brief description of the anatomy of sex organs and the physiology of erection. Understanding the complex physiology of orgasm and ejaculation allows the development of therapeutic targets for ejaculatory dysfunction. Ejaculatory dysfunction is a common disorder, and currently has no definitive cure. ![]() ![]() ![]() Despite the many published research projects dealing with the physiology of orgasm and ejaculation, much about this topic is still unknown. Antegrade ejaculation is a complex physiological process that is composed of two phases (emission and expulsion), and is influenced by intricate neurological and hormonal pathways. Orgasm is an intense transient peak sensation of intense pleasure creating an altered state of consciousness associated with reported physical changes. Orgasm and ejaculation are two separate physiological processes that are sometimes difficult to distinguish.
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