The bulb of penis is the proximal/posterior bulged end of the (unpaired median)
corpus spongiosum penis. Together with the two
crura (one crus on each side of the bulb), it constitutes the
root of the penis.
It is covered by the
bulbospongiosus.
Proximally/posteriorly, the bulb of penis extends towards the
perineal body
The perineum (: perineums or perinea) in placental mammals is the space between the anus and the genitals. The human perineum is between the anus and scrotum in the male or between the anus and vulva in the female. The perineum is the regio ...
. The bulb exhibits a slight yet palpable midline notch upon its inferior aspect.
The male urethra enters the penis at the superior aspect of the anterior part of the bulb (most of the bulb is thus situated inferoposteriorly to the urethra), and the
arteries of bulb of penis enter near the urethra.
The bulb of penis is
homologous to the
vestibular bulbs in females.
Additional images
File:Gray1142.png, Male urethra.
File:Gray1158.png, Diagram of the arteries of the penis.
References
External links
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Mammal male reproductive system
Human penis anatomy
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