Blood flows through lungs and back to the heart is called :-    Unidirectional circulationBranchial circulation Pulmonary circulationCutaneous circulation

Breakdown of the Problem

The question asks about a specific type of circulation involved with blood flow through the lungs and back to the heart.

Relevant Concepts

1. Circulatory Types:
   • Unidirectional Circulation: Generally refers to the flow of blood in one direction, but does not specifically relate to the lungs.
   • Branchial Circulation: Refers to blood flow associated with the gills in fish, not relevant here.
   • Pulmonary Circulation: This is the circulation of blood from the heart to the lungs and back, specifically for gas exchange.
   • Cutaneous Circulation: Involves blood flow to and from the skin.

Analysis and Detail

• Pulmonary Circulation is the correct term for the flow of deoxygenated blood from the right side of the heart to the lungs, where it becomes oxygenated, and then returns to the left side of the heart.

Verify and Summarize

Among the options provided, Pulmonary Circulation is the only one that correctly describes the route of blood flow through the lungs and back to the heart.

Final Answer

Pulmonary circulation