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प्रश्न
Differentiate between:
Arteries and Veins.
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उत्तर
| Arteries | Veins |
| These carry blood from the heart to different organs of the body. | These collect blood from different organs of the body. |
| These contain oxygenated blood (Pulmonary artery contains deoxygenated blood) | These contain deoxygenated blood. (Pulmonary vein contains oxygenated blood). |
| Blood flows rapidly with jerks under pressure. |
Blood flows slowly at a constant slow speed. |
| The walls are thick and elastic. | The walls are thin and non-elastic. |
| Valves are absent. | Valves are present. |
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- Label the parts 1 and 4 indicated in the diagram.
- Which of the above mentioned number is the thickest artery? Also write its name.
- Mention the number and chamber of the heart which has the thickest muscular wall.
- Which of the above numbers/structures has the maximum number of blood capillaries?
- Draw neat and labelled diagrams of the transverse section of vena cava and the part numbered as 3. Make sure to show the structural differences between these two in the diagram.
