Final answer:
The inability of the pulmonary valve to open would prevent blood from reaching the lungs, causing a disruption in the oxygenation process. The pulmonary vein actually carries oxygenated blood to the heart, contrary to the false statement. The right side of the heart is responsible for sending deoxygenated blood to the lungs, while the left side sends oxygenated blood to the body.
Step-by-step explanation:
If the pulmonary valve could not open, it would result in the blood being unable to reach the lungs. This is because the pulmonary valve is responsible for controlling the flow of blood from the right ventricle into the pulmonary artery, which carries deoxygenated blood to the lungs for oxygenation. In the event of the valve not opening, the deoxygenated blood would remain in the right ventricle, unable to reach the lungs, leading to a lack of oxygenated blood in the systemic circulation.
Concerning the circulatory system, statement a, which states that blood in the pulmonary vein is deoxygenated is false. In reality, the pulmonary vein carries oxygenated blood from the lungs back to the heart, entering the left atrium. Moreover, the right side of the heart, specifically the right atrium and ventricle, are tasked with sending deoxygenated blood to the lungs via the pulmonary circuit, whereas the left side of the heart sends oxygenated blood to the rest of the body through the systemic circuit.