Sunday 17 September 2017

CBSE Class 10 - Biology - - Arteries vs Veins (#cbseNotes)

Biology - Arteries vs Veins

Areteries vs Veins
credits: Kelvinsong (Wikimedia) under CC-BY-SA-3.0

Arteries and Veins are parts of closed circulatory system and both carry blood. Here follows the differences between the two:

SNo. Arteries Veins
1. Blood flows away from the heart. Blood flows towards the heart.
2. Blood flows with jerks and with great pressure. Blood flows smoothly and with less pressure.
3. They always carry oxygenated blood except the pulmonary artery. They always carry deoxygenated blood except the pulmonary vein.
4. Lumen of arteries is small. Lumen of vein is large.
5. Valves are absent. Semilunar valves are present to prevent the back flow of blood.
6. They are deep seated. They are usually superficial.
7. Their walls are elastic, thick and muscular. Their walls are non-elastic, thin and fibrous.
8. Non-collapsible. Collapsible
9. Red Colour. Bluish Red Colour

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