PATHOLOGY

Detailed explanation-1: -Pulmonary circulation is the system of transportation that shunts de-oxygenated blood from the heart to the lungs to be re-saturated with oxygen before being dispersed into the systemic circulation.

Detailed explanation-2: -Answer and Explanation: The correct answer is E. The pulmonary pathway flows from the right ventricle through the pulmonary trunk to the lungs to pick up oxygenated blood. The oxygenated blood returns to the left atrium.

Detailed explanation-3: -In the capillaries the blood takes up oxygen from the air breathed into the air sacs and releases carbon dioxide. It then flows into larger and larger vessels until the pulmonary veins (usually four in number, each serving a whole lobe of the lung) are reached.