perineal artery การใช้

Muscles in the penis relax, allowing blood from perineal arteries to rush in.
The internal pudendal gives rise to the perineal artery.
Some sources consider the urethral artery a direct branch of the internal pudendal artery, while others consider it a branch of the perineal artery.
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.
They pierce the fascia of the urogenital diaphragm, and run forward along the lateral part of the urethral triangle in company with the posterior scrotal branches of the perineal artery; they are distributed to the skin of the scrotum or labia and communicate with the perineal branch of the posterior femoral cutaneous nerve.