# data[].attributes.body
Oxygen-rich blood = red

# data[].attributes.headline
Enters the superior or inferior vena cava

# data[].attributes.subject
Enters the superior or inferior vena cava

# data[].attributes.body
Oxygen-poor blood = blue

# data[].attributes.body
Interatrial Septum
Interventricular Septum
Endocardium
Myocardium
Pericardium

# data[].attributes.body
Right Atrium
Right Ventricle
Left Atrium
Left Ventricle

# data[].attributes.body
Tricuspid valve
Pulmonary valve
Mitral valve
Aortic valve

# data[].attributes.body
Arteries
Veins
Capillaries