Which vein drains the tail and empties into the origin of the posterior vena cava?

A) hepatic portal vein
B) caudal vein
C) internal iliac vein
D) external iliac vein

Caudal Vein

A vein located in the tail region of animals, especially noted in veterinary contexts, facilitating blood return from the tail.

Posterior Vena Cava

The large vein that carries deoxygenated blood from the lower and middle body into the heart.

Hepatic Portal Vein

The hepatic portal vein is a blood vessel that carries blood from the gastrointestinal tract and spleen to the liver, transporting nutrients and toxins for processing.