THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -In general, the arteries are shown in red and the veins in blue. The exception is the pulmonary circulation system that includes the left and right pulmonary veins that carry the oxygenated blood from the lungs (red) to the left antrum.

Detailed explanation-2: -What makes pulmonary veins different from other veins? Your pulmonary veins are the only veins in your body that carry oxygen-rich blood. All your other veins carry oxygen-poor blood. Similarly, your pulmonary arteries are the only arteries that carry oxygen-poor blood.

Detailed explanation-3: -Answer and Explanation: The pulmonary arteries and veins carry deoxygenated blood, and they are typically colored blue on models to reflect this fact. In contrast, the rest of the arteries in the body carry oxygenated blood and are colored red to reflect this fact.