The
heart pumps blood out through vessels called arteries. These branch
repeatedly into microscopic capillaries that joint to form veins that carry
the blood back to heart.
Photos
Heart connected to the lungs
Heart intact, still located inside the fetal pig
body
Heart dangling from the pericardial sac (aorta visible, superficial characteristics of the heart as well)
Skycamtm view of aortal sinuses,
pulmonary arteries and veins
Measuring the heart
{Coronal} View of heart chambers, aorta, septum, atria top left and right of each half, ventricle bottom left and right