Label the circulatory system 1. identify the body areas or structures (letters)
vessels serving the head & upper limbs, vessels serving the lower limbs, vessels serving the abdominal cavity and intestines, capillaries of lungs

2. structures of the heart (numbers)
pulmonary trunk(artery), inferior vena cava, superior vena cava, pulmonary veins, aorta, abdominal aorta, right atrium, right ventricle, left atrium, left ventricle