Question

Explain human transportation system

Answer 1

Answer:

The human transport system is a system of tubes with a pump and valves to ensure one way blood flow. We need a transport system to deliver oxygen, nutrients and other substances to all our body cells, and take away waste products from them. The oxygenated blood (high in oxygen, red in color) comes to the heart from the lungs in the pulmonary vein; the heart pumps it to the aorta (an artery) to the rest of the body. The deoxygenated blood returns to the heart from the body in the vena cava (a vein), the heart pumps is to the lungs to get rid of the carbon dioxide.

Answer 2

Answer:

• The human transport system is a system of tubes with a pump and valves to ensure one way blood flow.
• We need a transport system to deliver oxygen, nutrients and other substances to all our body cells, and take away waste products from them.
• Arteries carry blood away from the heart and veins carry blood back to the heart.
• The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.

Explanation:

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