The Detrosor Muscle of the Urinary Bladder. The Detrusor Muscle is a layer of the Urinary Bladder wall which is itself made up by three layers. The Detrusor Muscle is smooth muscle fibers arranged in spiral and circuar bundles.
Prev Next. 1  Prostate cancer and blue balls, generally occur when an adult male does not ejaculate and in order to have a healthy sex life, a male must ejaculate. 2  Health Benefits of Male EjaculationProstate cancer:Frequent ejaculation lowers the risk of prostate cancer and protects the prostate gland.
Retrograde ejaculation. Retrograde ejaculation occurs when semen, which would, in most cases, be ejaculated via the urethra, is redirected to the urinary bladder. Normally, the sphincter of the bladder contracts before ejaculation forcing the semen to exit via the urethra, the path of least resistance.