Anatomy Surface anatomy for internal jugular vein- A Ear lobule to medial third of clavicle B Ear lobule to middle third of clavicle C Ear lobule to lateral third of clavicle D Mastoid to third of clavicle 💡 Explanation Surface anatomy for internal jugular vein- ✓ Correct Answer: A. Ear lobule to medial third of clavicle