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| |Gray's||subject #264 1253| |The deeper branches of the
internal pudendal artery. (Bulbourethral gland labeled at center
left.)| 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. 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 dimini