MCQ
Blood is poured into the left atrium by:
- ASuperior vena cava.
- ✓Pulmonary veins.
- CInferior vena cava.
- DPulmonary artery.
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| $(A)$ Glycolysis | $(a)$ Mitochondria |
| $(B)$ Kreb's cycle | $(b)$ Cytoplasmic matrix |
| $(C)$ Electron transport chain |