Question

is the blood that your heart pumps to your stomach part of the pulmonary circulatory loop?

Answer 1

No, the blood leaves the heart and goes to one of 2 places; one is pulmonary circulation which involves going to the lungs to be oxygenated and the other is systemic circulation which carries oxygenated blood to the rest of the body. The blood going to your stomach would be a part of systemic circulation.