Final answer:
Among the venous systems listed, the bronchial veins (option d) contribute to anatomic shunt as they allow deoxygenated blood to bypass the full oxygenation process in the lungs before rejoining the systemic circulation.
Step-by-step explanation:
When discussing anatomic shunts within the circulatory system, these are regions where blood passes from the venous to the arterial side of the circulation without passing through the lungs for oxygenation. In the context of the question about which venous systems contribute to anatomic shunt, the answer is d) Bronchial veins.
The bronchial veins carry a portion of the deoxygenated blood from the bronchi back to the heart, creating a natural shunt. This is contrasted with pulmonary veins, which carry highly oxygenated blood from the lungs to the left atrium, and where the blood then moves to the left ventricle and is pumped into the aorta to enter the systemic circuit.