Biology
Write one important role of each of the following:
- Erythrocytes
- Thrombocytes
- Arteries
- Vena cavae
- Heart
Circulatory System
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Answer
Erythrocytes contain an iron and protein compound called Haemoglobin that acts as the "oxygen-carrier".
The Thrombocytes help in the clotting of blood which prevents excessive blood loss and direct entry of disease causing germs into the blood through cuts and open wounds.
Arteries are crucial blood vessels that carry the blood away from the heart (oxygenated blood) to different parts of the body.
The vena cava's primary role is to return deoxygenated blood from the body back to the heart.
The heart, acting as a pump, pushes and receives the blood to and from the whole body through the blood vessels.
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