Pulmonary arteriovenous malformation is a disorder that occurs when an unnatural connection forms between the pulmonary veins and pulmonary arteries. These malformations allow blood to flow from the pulmonary arteries into the pulmonary veins. Which of the following is CORRECT about this disorder?
1) There will be less external respiration, the loading of oxygen, and the unloading of carbon dioxide, occurring within the lungs.
2) There will be an increase in the concentration of oxygen in the blood due to bypassing the systemic circuit.
3) There will be a decrease in the gas exchange that occurs in the heart.
4) Both A and B are correct