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The seminal vesicles (also called vesicular glands [1] or seminal glands) are a pair of convoluted tubular accessory glands that lie behind the urinary bladder of male mammals. They secrete fluid that largely composes the semen. The vesicles are 5–10 cm in size, 3–5 cm in diameter, and are located between the bladder and the rectum.
During the process of ejaculation, sperm passes through the ejaculatory ducts and mixes with fluids from the seminal vesicles, the prostate, and the bulbourethral glands to form the semen. The seminal vesicles produce a yellowish viscous fluid rich in fructose and other substances that makes up about 70% of human semen. [5]
Retrograde ejaculation occurs when semen which would be ejaculated via the urethra is redirected to the urinary bladder. Normally, the sphincter of the bladder contracts before ejaculation, inhibiting urination and preventing a reflux of semen into the bladder. The semen is forced to exit via the urethra, the path of least resistance.
Retrograde ejaculation empties the seminal fluid formed in the emission phase into the bladder of the male instead of expelling it through the urethra and out the tip of the penis. [4] This results in a dry orgasm, where orgasm may still be experienced but without expulsion of semen from the ejaculatory ducts.
Its secretion forms up to 30% of the semen. Semen is the fluid emitted by males during the sexual response. [19] When sperm are emitted, they are transmitted from the vas deferens into the male urethra via the ejaculatory duct, which lies within the prostate gland. [19] Ejaculation is the expulsion of semen from the urethra. [19]
Aspermia is the complete lack of semen with ejaculation (not to be confused with azoospermia, the lack of sperm cells in the semen). It is associated with infertility.. One of the causes of aspermia is retrograde ejaculation, because of that the sperm is kept into the bladder and the final ejaculate is 0 mL. [1]
Semen is an important indicator of men’s overall well-being and can help raise potential issues early. What your semen says about your health Skip to main content
Some neoplasms of the genitourinary system may present with haematospermia. Malignant causes of haematospermia include; prostate cancer, testicular or epididymal tumours, seminal vesicle carcinoma (rarely), and urethral tumour. [4] Lymphomas and leukaemias may also feature haematospermia as symptom. [5]