The portal vein, or hepatic portal vein, is the main blood vessel of the portal venous system (PVS), which delivers blood to the liver from the stomach, intestines, spleen, gallbladder, and pancreas.

Anatomy. The (external) jugular vein is located superficially under the skin on both sides of the neck, running in a caudodorsal direction from dorsal aspect of the tympanum to the coelomic cavity.

This article provides a review of the relevant anatomy and physiology of the peripheral venous system, techniques for maintaining catheter security, and guidelines for conducting a systematic ...