On left side urethral muscle has been removed over bulbo-urethral
gland. Cornua of uterus masculinus are indicated in urogenital fold.
]
=Structure.=—The wall, exclusive of the partial serous coat, consists of
a fibrous =adventitia=, a middle =muscular coat=, and a =mucous lining=.
The muscular coat is thickest at the fundus, and consists of two planes
of longitudinal fibers with a circular layer between them. The mucous
membrane is thin, and is arranged in numerous folds which form a
network; the spaces so inclosed present the openings of tubulo-alveolar
glands. The epithelium is columnar. The =blood-supply= is derived from
the =internal pudic artery=.