Anatomy Head and neck 0c8922f5

All of the following statements about Diploic veins are true except

Develop around 8th wks of gestation

These have no valves

Present in cranial bones

Have a thin wall lined by single layer of endothelium

High-Yield Explanation

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

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