Dorsal artery of the penis

Dorsal artery of the penis is a significant arterial vessel contributing to the blood supply of the penis. It is a branch of the internal pudendal artery, which itself is a branch of the internal iliac artery. The dorsal artery runs along the top of the penis, providing oxygenated blood essential for erectile function and the health of penile tissues.

Anatomy

The dorsal artery of the penis originates from the internal pudendal artery after it exits the pudendal canal, also known as Alcock's canal. It travels alongside the deep artery of the penis but remains superficial to the Buck's fascia, a layer of deep fascia covering the corpora cavernosa of the penis. The artery is accompanied by the dorsal nerve of the penis and the deep dorsal vein, forming the neurovascular bundle of the penis.

As it progresses towards the glans penis, the dorsal artery gives off several branches:

• Circumflex arteries, which supply the corpus spongiosum and the urethra.
• Urethral arteries, specifically targeting the spongy tissue of the urethra.
• Arteries to the glans penis, ensuring the distal part of the penis is well-oxygenated.

Function

The primary function of the dorsal artery of the penis is to supply blood to the skin, prepuce (foreskin), and glans of the penis. It plays a crucial role in the process of erection, providing the necessary blood flow to maintain the structural integrity and functionality of the penile tissues. The artery's contribution is vital for sexual health and reproductive capabilities.

Clinical Significance

1. 1. 1. Erectile Dysfunction

Impairment in the dorsal artery's function can lead to erectile dysfunction (ED), a condition where achieving or maintaining an erection is difficult. ED can result from atherosclerosis, trauma, or other conditions affecting blood flow.

1. 1. 1. Penile Trauma

Injuries to the dorsal artery of the penis can cause significant bleeding and may require surgical intervention to repair. Such trauma is often associated with penile fractures or severe blunt force.

1. 1. 1. Diagnostic Imaging

The dorsal artery of the penis is often visualized in diagnostic imaging techniques, such as penile Doppler ultrasound, to assess blood flow and investigate causes of erectile dysfunction.

Treatment and Management

Treatment for issues related to the dorsal artery of the penis depends on the underlying cause. Options may include medication to improve blood flow, surgical repair of arterial damage, or interventions to remove blockages in cases of atherosclerosis.

See Also

• Penis
• Erectile dysfunction
• Internal pudendal artery
• Internal iliac artery
• Pudendal canal