What is the venous drainage of the bladder in males?

The correct answer, which identifies the vesicoprostatic plexus as the venous drainage of the bladder in males, is based on the anatomical relationships and the vascular structures involved in this area. The bladder is drained primarily through the vesicoprostatic plexus, which is a network of veins situated around the bladder and prostate. This plexus collects blood from the bladder and drains into the internal iliac veins, which further leads to the systemic circulation.

The alternative options do not serve as the primary venous drainage for the male bladder. The vesicouterine plexus is involved in the venous drainage of the female reproductive organs and is not relevant to males. The external iliac veins, while important in pelvic venous drainage, do not directly drain the bladder, as they receive blood from the internal iliac veins among others. The saphenous vein is a major superficial vein of the lower limb and is unrelated to the structure or function of the urinary bladder.

Understanding the correct venous drainage pathway is crucial for surgical and anatomical knowledge, especially during procedures involving the bladder and surrounding structures.