Is time to rising and shining good morning everyone my name is adhem is time study in class 5th class today my topic is arteries and veins the circulatory system made of of hard blood and blood vessels blood my topic is blood vessels they known as for arteries veins they carry oxygenated blood and from all parts of body from heart they appear in red in colour and have thick walls veins they carry deoxygenated blood and impure blood from all parts of body from heart they appear in blue in colour and have thin walls thank you have a nice day