Superior vena cava is formed by?
Developmentally, the superior vena cava consists of two pas: first and second. The first pa develops from the right anterior cardinal vein caudal to oblique transverse anastomosis. The second pa develops from the right common cardinal vein. Reference: Textbook of clinical embryology, Vishram Singh,1st edition, page no.223-224
Vitelline veins
Supracardinal vein
Infracardinal vein
Common cardinal vein
Head and neck