MCQOPTIONS
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| 1. |
Mitral valve in mammals guards the opening between: |
| A. | Left auricle and left-ventricle |
| B. | Pulmonary vein and left auricle |
| C. | Stomach and intestine |
| D. | Liver and spleen |
| Answer» B. Pulmonary vein and left auricle | |