Transcription: The most common and most common are the most common. The most common are the most common. The most common are the most common. The most common are the most common. The most common are the most common. The most common are the most common. The most common are the most common. The most common are the most common. The most common are the most common. The most common are the most common. Principle veins and arteries. Internal jugular vein, common carotid artery, subclavian vein, subclavian artery, superior vena cava, axillary artery, pulmonary vein, brachial artery, inferior vena cava, portal vein, ...