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|Gray's||subject #264 1253|
|The deeper branches of the internal pudendal artery. (Bulbourethral gland labeled at center left.)|
Location[edit | edit source]
Bulbourethral glands are located posterior and lateral to the membranous portion of the urethra at the base of the penis, between the two layers of the fascia of the urogenital diaphragm, in the deep perineal pouch.
They are enclosed bytransverse fibers of the sphincter urethrae membranaceae muscle.
Structure[edit | edit source]
The bulbourethral glands are compound tubuloalveolar glands, each approximately the size of a pea. They are composed of several lobules held together by a fibrous covering. Each lobule consists of a number of acini, lined by columnar epithelial cells, opening into a duct which joins with the ducts of other lobules to form a single excretory duct. This duct is approximately 2.5 cm long and opens into the urethra at the base of the penis. The glands gradually diminish in size with advancing age.
Function[edit | edit source]
During sexual arousal each gland produces a clear, viscous secretion known as pre-ejaculate. This fluid helps to lubricate the urethra for spermatozoa to pass through, and to help flush out any residual urine or foreign matter. It is possible for this fluid to pick up sperm, remaining in the urethral bulb from previous ejaculations, and carry them out prior to the next ejaculation.
References[edit | edit source]
- Gray's Anatomy, 38th edn, p 1861
Additional images[edit | edit source]
See also[edit | edit source]
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