PATHOLOGY

Detailed explanation-1: -Oxygen-poor blood returns from the body to the heart through the superior vena cava (SVC) and inferior vena cava (IVC), the two main veins that bring blood back to the heart.

Detailed explanation-2: -Two large veins that lead into the heart are the superior vena cava and inferior vena cava.

Detailed explanation-3: -Arteries are blood vessels responsible for carrying oxygen-rich blood away from the heart to the body. Veins are blood vessels that carry blood low in oxygen from the body back to the heart for reoxygenation.

Detailed explanation-4: -All the veins carry deoxygenated blood except the pulmonary vein. It carries oxygenated blood from lungs to the heart.