Order+Through+the+Heart

Steps of the Heart:

From the **Cranial** or **Caudal Vena Cava**

to the **Right Atrium**

through the **Tricuspid/ Right Atrio-Ventricular Valve**

to the **Right Ventricle**

through the **Pulmonary/ Right Semi-Lunar Valve**

to the **Pulmonary Artery** (the only artery carrying de-oxygenated blood)

to the **Right and Left Lungs** (artery to arterioles to capillaries to venules to vein)

to the **Pulmonary Vein** (the only vein carrying oxygenated blood)

to the **Left Atrium**

through the **Bicuspid/Mitral/Left Atrio-Ventricular Valve**

to the **Left Ventricle**

through the **Aortic/Right Semi-Lunar Valve**

to the **Aorta**