Middle ethmoidal sinus is supplied by
Middle ethmoidal sinus:
→ Made up of 1 to 7 air cells.
→ Opens into middle meatus of nose.
→ Supplied by -

Anterior ethmoidal nerve and vessels.
Orbital branches of pterygopalatine ganglion.

→ Lymphatic drainage - Submandibular nodes.
Anterior ethmoidal nerve and vessels
Middle ethmoidal nerve and vessels
Posterior ethmoidal nerve and vessels
All of the above