THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -They carry deoxygenated blood back from the body to the heart. Pulmonary artey carries blood which is rich in carbon dioxide from the right ventricle of the heart to the lungs for oxygenation.

Detailed explanation-2: -A crucial difference is that your pulmonary artery carries oxygen-poor (deoxygenated) blood, while your aorta carries oxygen-rich (oxygenated) blood. In fact, your pulmonary arteries are the only arteries in your body that carry oxygen-poor blood.

Detailed explanation-3: -Conclusions: pCO2 values are higher in the superior vena cava than in the pulmonary artery.

Detailed explanation-4: -Carbon dioxide content is usually measured with electrolyte concentrations in venous blood and is usually approximately 5% higher than arterial because it also includes H2CO3, dissolved carbon dioxide, carbonate, and carbon dioxide bound to amino acids (carbamates) and because Pco2 is higher in venous blood.