Surface anatomy for internal jugular vein
Internal jugular vein is marked by a broad line by joining these two points: a.The first point on the neck medial to the lobule of the ear b.The second point at the medial end of the clavicle. <img src=" /> Ref.BDC volume 3,sixth edition pg 303
Ear lobule to medial third of clavicle
Ear lobule to middle third of clavicle
Ear lobule to lateral third of clavicle
Mastoid to third of clavicle
Head and neck