The circulatory system

• Functions-circulates blood through the body,helps fight diseases,removes waste from cells like carbon dioxide,helps maintain correct body temperature & transports water,oxygen & food to cells.
• The circulatory system consist of three parts: the heart, blood vessels, and the blood.
• Heart-the organ which pumps blood around the body
• Blood vessels-the tubes through which the blood moves.
• We have 5L/5 Liters of blood in the human body.
• The heart is divided into 4 chambers: right atrium, right ventricle, left atrium, and left ventricle
• Three types of blood vessels- arteries, veins, and capillaries
• Pulmonary artery carries deoxygenated blood from the heart to the lungs
• pulmonary veins carries oxygenated blood