Bulb of penis

The bulb of penis is the proximal/posterior bulged^[1] 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.^[2] It is covered by the bulbospongiosus.

Bulb of penis
The constituent cavernous cylinders of the penis. (Bulb labeled at bottom center.)
Vertical section of bladder, penis, and urethra. (Bulb visible at bottom center.)
Details
Part of	Penis
Artery	Artery of bulb of penis
Vein	Vein of bulb of penis
Lymph	Superficial inguinal lymph nodes
Identifiers
Latin	bulbus penis
TA98	A09.4.01.016
TA2	3685
FMA	19614
Anatomical terminology [edit on Wikidata]

Proximally/posteriorly, the bulb of penis extends towards the perineal body. The bulb exhibits a slight yet palpable midline notch upon its inferior aspect.^[2]

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.^[2]

The bulb of penis is homologous to the vestibular bulbs in females.^[3]

Additional images

• 
  Male urethra.
• 
  Diagram of the arteries of the penis.