Table of Contents:

I. Week 3 Development

II. Week 4 Development

III. Heart Chambers and Outflow Tract

IV. Atrioventricular Septation

V. Outflow Tract Septation

VI. Ventricular Septation

VII. Atrial Septation

VIII. Atrial Walls

IX. Aortic Arch Vessels

X. Changes at Birth