arteries have thick elastic walls while veins have valves,explain.
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Because arteries are deeply seated in body.
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ᴀs ᴛʜᴇ ᴀʀᴛᴇʀɪᴇs ᴛʀᴀɴsᴘᴏʀᴛ ʙʟᴏᴏᴅ ᴡɪᴛʜ ᴠᴇʀʏ ʜɪɢʜ ᴘʀᴇssᴜʀᴇ ᴛʜᴇʏ ʜᴀᴠᴇ ᴛʜɪᴄᴋ ᴇʟᴀsᴛɪᴄ ᴡᴀʟʟs ᴛᴏ ᴡɪᴛʜsᴛᴀɴᴅ ᴛʜᴇ ᴘʀᴇssᴜʀᴇ. ʙʟᴏᴏᴅ ɪɴ ᴛʜᴇ ᴀʀᴛᴇʀɪᴇs ɪs ᴜɴᴅᴇʀ ʜɪɢʜ ᴘʀᴇssᴜʀᴇ ɢᴇɴᴇʀᴀᴛᴇᴅ ʙʏ ᴛʜᴇ ʜᴇᴀʀᴛ, sᴏ ᴀʀᴛᴇʀɪᴇs ʜᴀᴠᴇ ᴛʜɪᴄᴋ ᴡᴀʟʟs. ᴜɴʟɪᴋᴇ ᴀʀᴛᴇʀɪᴇs, ᴠᴇɪɴs ʜᴀᴠᴇ ᴏɴᴇ-ᴡᴀʏ ᴠᴀʟᴠᴇs ɪɴ ᴛʜᴇᴍ ᴛᴏ ᴋᴇᴇᴘ ᴛʜᴇ ʙʟᴏᴏᴅ ᴍᴏᴠɪɴɢ ɪɴ ᴛʜᴇ ᴄᴏʀʀᴇᴄᴛ ᴅɪʀᴇᴄᴛɪᴏɴ.
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