what is pulmonary veins
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Pulmonary vein: One of four vessels that carry aerated blood from the lungs to the left atrium of the heart. The pulmonary veins are the only veins that carry bright-red oxygenated blood.
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ᴛʜᴇ ʟᴜɴɢ ᴠᴇɪɴs sᴏᴍᴇᴛɪᴍᴇs ʀᴇғᴇʀʀᴇᴅ ᴛᴏ ᴛʜᴇᴘᴜʟᴍᴏɴᴀʀʏ ᴠᴇɪɴs, ᴀʀᴇ ʙʟᴏᴏᴅ ᴠᴇssᴇʟs ᴛʜᴀᴛ ᴛʀᴀɴsғᴇʀ ғʀᴇsʜʟʏ ᴏxʏɢᴇɴᴀᴛᴇᴅ ʙʟᴏᴏᴅ ғʀᴏᴍ ᴛʜᴇ ʟᴜɴɢs ᴛᴏ ᴛʜᴇ ʟᴇғᴛ ᴀᴛʀɪᴀ ᴏғ ᴛʜᴇ ʜᴇᴀʀᴛ.
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