MCQ
Blood returns from lungs to the heart into the?
- ARight atrium
- BRight ventricle
- CLeft ventricle
- DLeft atrium
Explanation:
The oxygenated blood leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle.
This blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle.
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| List $I$ | List $II$ |
| $A$. Rose | $I$. Twisted aestivation |
| $B$. Pea | $II$. Perigynous flower |
| $C$. Cotton | $III$. Drupe |
| $D$. Mango | $IV$. Marginal placentation |
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