How is the blood supplied and lymphatic drainage accomplished in the paranasal sinuses?

Updated: Mar 01, 2018
  • Author: Itzhak Brook, MD, MSc; Chief Editor: Michael Stuart Bronze, MD  more...
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Answer

The arterial supply of the paranasal sinuses is from branches of the internal and external carotid arteries, while the venous and lymphatic drainage path is through the sinus ostia into the nasal cavity plexus. In addition, venous drainage occurs through valveless vessels corresponding to the arterial supply.


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