Anatomy All of the following are true about diploic vein except – A Lined by single layer of endothelium supported by elastic tissue B Present in cranial bones C Valveless / thin walled D Develop by 8th week of IUL 💡 Explanation All of the following are true about diploic vein except - ✓ Correct Answer: D. Develop by 8th week of IUL