Veins are thin walled and have values- why
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Veins are the blood vessles in human body which carry the deoxygenated blood from different body parts back to the heart .Since the blood carried from different body parts is not under high pressure the veins are thin walled .
In order to prevent the backflow of deoxygenated blood veins have valves which allow the unidirectional flow of blood
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ᴠᴇɪɴs ʜᴀᴠᴇ ᴛʜɪɴ ᴡᴀʟʟs ʙᴇᴄᴀᴜsᴇ ᴛʜᴇ ʙʟᴏᴏᴅ ɪs ɴᴏ ʟᴏɴɢᴇʀ ᴜɴᴅᴇʀ ᴘʀᴇssᴜʀᴇ ᴀɴᴅ ᴛʜᴇʏ ʜᴀᴠᴇ ᴠᴀʟᴠᴇs ᴛᴏ ᴇɴsᴜʀᴇ ʙʟᴏᴏᴅ ғʟᴏᴡ ɪɴ ᴏɴᴇ ᴅɪʀᴇᴄᴛɪᴏɴ.
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