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Option 1 : Veins
- Veins carry deoxygenated blood from different parts of the human body to the heart.
- Pulmonary veins carry oxygenated blood from the lungs to left atrium.
- There are 2 major types of veins- superior vena cava and inferior vena cava which carry deoxygenated blood from different body parts.
- Arteries carry blood rich in oxygen from the heart to different body parts and tissues.
- Nerves carry messages and signals from one body part to another.
- Lungs help in the process of respiration.
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