Why Right internal jugular vein is preferred to left internal jugular vein?

• Right jugular vein and innominate vein extends in a straight line from superior vena cava and right atrium
• Left innominate vein into which left internal jugular vein drains does not extend in a straight line from superior vena cava and right atrium
• Left innominate vein may be kinked or compressed by dilated aorta or aneurysm or other surrounding structures