Perineal artery

The perineal artery (superficial perineal artery) arises from the internal pudendal artery, and turns upward, crossing either over or under the superficial transverse perineal muscle, and runs forward, parallel to the pubic arch, in the interspace between the bulbospongiosus and ischiocavernosus muscles, both of which it supplies, and finally divides into several posterior scrotal branches which are distributed to the skin and dartos tunic of the scrotum.

Perineal artery
The superficial branches of the internal pudendal artery. (Perineal artery visible but not labeled.)
Details
Source	Internal pudendal artery
Branches	Transverse perineal artery and posterior scrotal arteries
Vein	Perineal vein
Supplies	bulbospongiosus and ischiocavernosus muscles, and skin and dartos tunic of the scrotum.
Identifiers
Latin	Arteria perinealis
TA	A12.2.15.040
FMA	20836
Anatomical terminology

As it crosses the superficial transverse perineal muscle it gives off the transverse perineal artery which runs transversely on the cutaneous surface of the muscle, and anastomoses with the corresponding vessel of the opposite side and with the perineal and inferior hemorrhoidal arteries.

It supplies the Transversus perinæi superficialis and the structures between the anus and the urethral bulb.