# data[].attributes.body
Interatrial septum- Divides the left and right artia

Interventricular septum- Divides the left and right ventricles

Endocardium- The inner lining of the heart chambers and valves

Myocardium- Muscular middle layer, responsible for contractions

Pericardium- The membranous outer lining of the heart

# data[].attributes.body
1. Arteries- Carry blood away from the heart, oxygen rich (except pulmonary arteries)

2. Veins- Carry blood toward the heart, oxygen poor (except pulmonary veins)

3. Capillaries- Small vessels where gases and nutrients are exchanged

# data[].attributes.body
1. Right artium- Recives deoxygenated blood from the body (via the superior and inferior vena cava)

2. Right ventricle- Pumps deoxygenated blood into the lungs (via the pulmonary artery)

3. Left atrium- Recives oxygenated blood from the lungs (via pulmonary veins)

4. Left ventricle- Pumps blood to the entire body (via the aorta)

Atria- The upper chambers, recive blood

Ventricles- The lower chambers, pump blood

# data[].attributes.body
1. Tricuspid valve- Between the right atrium and the right ventricle

2. Pulmonary valve- Between the right ventricle and the pulmonary artery

3. Mitral valve- Between the left atrium and left ventricle

4. Aortic valve- Between the left ventricle and the aorta