Question

The vein that does not directly open into the heart is :

Answer 1

Answer:

The vein that does not directly open into the heart is the posterior mesenteric vein.

Explanation:

• A blood artery that drains blood from the small intestine is the posterior mesenteric vein (jejunum and ileum).
• It joins the splenic vein to form the hepatic portal vein at its end behind the pancreas' neck, and hence does not open into the heart.