write the characteristics of arteries and veins
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Artery
carry blood to the heart
thick and elastic wall
blood flow with high speed and high pressure.
vein
carry blood to the heart
thin wall
valves are seen.
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- arteries
- these carry blood from heart to different parts of the body.
- these carry oxygenated blood except pulmonary artery.
- they are deeply situated.
- they are thick walled.
- they are without valves.
- can constrict and dilate.
- Branched and decrease in size.
2. veins
- these carry blood from different parts of body to the heart.
- These carry Deoxgenated blood except pulmonary veins.
- they are superficially situated.
- they are thin walled.
- they are with valves.
- cannot constrict.
- unites and increase in size
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