Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Systemic vein
Introduction
In human anatomy, the systemic venous system is the veins that drain into the right atrium without passing through two vascular beds (i.e. they originate from a set of capillaries and do not pass through a second set of capillaries before reaching the right side of the heart).
The term systemic venous system is often used to differeniate veins from veins that drain the pulmonary system (the pulmonary venous system) and veins that drain the digestive tract (the portal venous system).
Large veins that are considered part of the system venous system are the:
See also
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]