Question

Trace the path of a blood cell coming out of the heart into the left common carotid artery, what vessels you go through before you make it back to the superior vena cava?

Answer 1

The left common carotid artery divides into external and internal carotid arteries .

External carotid artery divide into many branches supplying esophagus, lower has etc.The internal carotid artery combine with vertebral artery and form a part of Circle of Willis.

The branches of external drains into corresponding vein(example -superficial temporal artery drains into superficial temporal vein).The small vein finally drain into external jugular vein.

The branches of internal carotid artery drains into the internal jugular vein.

The internal and external jugular veins join with the left subclavian vein to form left brachiocephalic vein which join the Superior venacava .