Question

Complete the following flow diagram of double circulation:

Hint:

Double circulation ensures efficient oxygen delivery by separating oxygenated and deoxygenated blood.

Answer 1

Step 1: Double circulation in mammals involves two circuits: - Pulmonary circulation: Deoxygenated blood from the heart to lungs and back. - Systemic circulation: Oxygenated blood from the heart to body organs and back. Step 2: Completed Flow Diagram: \[ \text{Heart} \rightarrow \text{Right atrium} \rightarrow \text{Right ventricle} \rightarrow \text{Lungs (Pulmonary circulation)} \rightarrow \text{Left atrium} \rightarrow \text{Left ventricle} \rightarrow \text{Body organs (Systemic circulation)} \rightarrow \text{Right atrium}. \] - Deoxygenated blood enters the right atrium, moves to the right ventricle, and is pumped to the lungs for oxygenation. - Oxygenated blood returns to the left atrium, flows to the left ventricle, and is pumped to body organs. - Deoxygenated blood from organs returns to the right atrium.