circulatory system the heart

• The job of the Circulatory system is to carry oxygen to your lungs and body cells
• The circulatory system is made up of the heart, blood vessels and blood
• The heart is made of muscle tissue and is surrounded by a double layer of muscle tissue called the pericardium
• The heart has a pace maker, this tells the heart when to pump blood around the body

  If a pacemaker doesn’t work it causes and irregular heart heart