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| ACROSS | DOWN |
|---|---|
| 3 Vessel with valves | 1 Lung vascular circuit |
| 6 Artery around a blockage | 2 Smallest vessel |
| 4 Outflow vessel | |
| 5 Four chambered pump | |
| ACROSS | |
|---|---|
| CLUE | ANSWER |
| 3 Vessel with valves | VEIN |
| 6 Artery around a blockage | COLLATERAL |
| DOWN | |
|---|---|
| CLUE | ANSWER |
| 1 Lung vascular circuit | PULMONARY |
| 2 Smallest vessel | CAPILLARY |
| 4 Outflow vessel | AORTA |
| 5 Four chambered pump | HEART |