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"Diagram of circulation. r.a., Right auricle receiving superior vena cava (s.v.c.) and inferior vena cava (i.v.c.); r.v., right ventricle; p.a., pulmonary artery to lungs (L.); p.v., right pulmonary vein; l.a., left auricle; l.v., left ventricle; ao., aortic arch; d.ao., dorsal aorta giving off arteries to liver (ii.), to gut (g.), to body (B.); po.v., portal veins; h.v., hepatic vein." -Thomson, 1916

Circulation

"Diagram of circulation. r.a., Right auricle receiving superior vena cava (s.v.c.) and inferior vena…

The heart is the organ that propels the blood and causes it to circulate through the arteries, veins, and capillaries.

Heart

The heart is the organ that propels the blood and causes it to circulate through the arteries, veins,…

The interior of the heart is divided longitudinal into the right and left sections. Each right and left portion is divided into a upper and lower section.

Human Heart

The interior of the heart is divided longitudinal into the right and left sections. Each right and left…

1 Right pulmonary veins; 1' Cavity of the auricle; 2 Wall of the auricle; 3,3' Walls of the ventricle; 3'' Bottom of heart; 4 Anterior carnea of musculus papillares; 5,5 Musculi papillares; 5' Left side of the Septum; 6,6' Mitral valve; 7 Interior of the aorta; 7' Exterior of the aortic sinus; 8 Root of the pulmonary artery; 8' Separated portion of the pulmonary artery; 9 Cord of the ductus arteriosus; 10 Arteries rising from the summit of the aortic arch

Human Heart

1 Right pulmonary veins; 1' Cavity of the auricle; 2 Wall of the auricle; 3,3' Walls of the ventricle;…