Question

multiple choice question
which term refers to the flow of blood back to the heart?

pulmonary circuit
portal circuit
venous return
arterial return

Explanation:

To solve this, we analyze each option:

• Pulmonary circuit: Involves blood flow between heart and lungs, not specifically return to heart.
• Portal circuit: Carries blood between organs (e.g., liver - digestive tract), not general return to heart.
• Venous return: By definition, is the flow of blood from the body's tissues back to the heart via veins.
• Arterial return: Arteries carry blood away from the heart, so this term is incorrect.

Answer:

C. Venous return