MCQOPTIONS
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| 1. |
The blood in the pulmonary arteries is at a lower pressure than the blood in aorta allowing |
| A. | bicuspid valve to shut |
| B. | tricuspid valve to shut |
| C. | semi lunar valves to prevent backflow of blood |
| D. | gaseous exchange to effectively take place in lungs |
| Answer» E. | |