Question

all of the following blood vessels transport oxygen - poor blood, except the: pulmonary trunk coronary sinus pulmonary veins inferior vena cava superior vena cava

Explanation:

• Pulmonary trunk: Carries oxygen - poor blood from the right ventricle to the lungs for oxygenation.
• Coronary sinus: Drains oxygen - poor blood from the myocardium (heart muscle) into the right atrium.
• Pulmonary veins: These are the only veins in the body that carry oxygen - rich blood. They transport oxygenated blood from the lungs to the left atrium.
• Inferior vena cava: Brings oxygen - poor blood from the lower half of the body to the right atrium.
• Superior vena cava: Brings oxygen - poor blood from the upper half of the body to the right atrium.

Answer:

pulmonary veins