91影视

The carbon dioxide is released by the red blood cell in pulmonary capillary blood and has a high hemoglobin affinity for oxygen. The molecules of carbon dioxide are transported as part of the bicarbonate system from body tissues to the lungs.

The pulmonary vein facilitates the transportation of oxygenated blood from the lungs to the left side of the atrium.

Thus, the word pulmonary vein refers to oxygenated blood.

Therefore, the given option is true.

When CO2 is exhaled from the nose via the trachea, the air is transported with a high concentration of carbon dioxide out of the lungs.

Thus, carbon dioxide is exhaled through the trachea.

Therefore, the given option is false.

The right atrium receives oxygen-poor blood from the body via inferior and superior vena cava and then empties the blood into the right ventricle.

Thus, the deoxygenated blood is passed through the right atrium.

Therefore, the given option is false.

The deoxygenated blood is carried to the right ventricle from the right atrium and then low oxygen blood is pumped to the lungs via the pulmonary valve.

Therefore the deoxygenated blood is passed through the right ventricle.

Therefore, the given option is false.