the heart

• the heart pumps blood around the body
• the heart is part of a double circulatory system
• made of a special muscle that doesn't tire easily so it is made of lots of mitochondria on the heart tissue
• chambers-hold blood
• blood vessels transport bllod
• artery takes blood away from the heart
• veins bring blood back to the heart
• pulmonary- to or away from the lungs
• heart diagram

  
• the right side of the heart pumps deoxygenated blood to the lungs to pick up oxygen. the right side consists of the pulmonary artery, vena cava, right atrium and right ventricle
• the left side of the heart pumps deoxygenated blood to the lungs. the let side consists of the aorta, pulmonary vein, left atrium and left ventricle