Full Cowper's Gland Description
[Continued from above] . . . A thin fibrous membrane surrounds the lobules to hold the gland together and give a firm structure to the gland. The many lobules meet at an inch-long (2.5 cm) duct that carries the secretions of the Cowper’s gland to the urethra at the base of the penis.
The secretions produced by the Cowper’s glands help to protect sperm as it passes through the urethra during ejaculation. In response to sexual stimulation prior to ejaculation, the Cowper’s glands begin producing an alkaline mucous secretion known as pre-ejaculate. Pre-ejaculate neutralizes acidic urine that may still be present in the urethra while also lubricating the urethra and external urethral orifice to protect sperm from mechanical damage during ejaculation.
Prepared by Tim Taylor, Anatomy and Physiology Instructor