Registered Vascular Technologist (RVT) Practice Exam 2025 – Comprehensive All-in-One Guide to Exam Success!

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What forms the portal confluence in the circulatory system?

Inferior mesenteric vein and splenic vein

Splenic vein and superior mesenteric vein

The correct answer is that the portal confluence in the circulatory system is formed by the splenic vein and the superior mesenteric vein. This anatomical structure is significant because it is where these two veins converge to create the portal vein, which is responsible for transporting blood that is rich in nutrients from the gastrointestinal tract and spleen to the liver for processing and detoxification.

The splenic vein drains blood from the spleen, while the superior mesenteric vein drains blood from the small intestine and the proximal part of the large intestine. When these veins converge, the resulting portal vein is crucial for the hepatic circulation, linking the intestines and the liver.

Understanding this confluence is vital for those studying vascular technology and the anatomy of the circulatory system, as it highlights how the body manages blood flow from the digestive organs to the liver, a key organ in metabolism and detoxification processes.

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Superior mesenteric vein and inferior vena cava

Portal vein and hepatic vein

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