All of the following statements about Diploic veins are true except
Diploic veins form sinuses in cancellous tissue between laminae of cranial bones.The skull is unilamellar at bih without any dipole. The diploic veins sta to develop at around 2 years of age along it diploe.These veins are lined by endothelium suppoed by some elastic tissue and are valveless.Reference"Chaurasia&;s human anatomy vol 3 ,4th edition, page no.96
Develop around 8th wks of gestation
These have no valves
Present in cranial bones
Have a thin wall lined by single layer of endothelium
Head and neck