IMPORTANT ANATOMY

Sinuses:

  • Frontal Sinuses:
    • Pair of air filled cavities behind your forehead
    • Communicate with the nasal passages through a small opening at the bottom of each sinus
  • Maxillary Sinuses:
    • Pair of air filled cavities behind your cheekbones; below your eyes and above your teeth
    • Largest pair of sinuses
    • Communicate with the nasal cavity through a small opening at the entrance of each sinus
  • Ethmoid Sinuses:
    • Multiple small air cells shaped like a honeycomb behind your nose and between your eyes
    • They form 2 main groups of cells: anterior and posterior ethmoidal cells
  • Sphenoid Sinuses:
    • Pair of air filled cavities in the center of your head
    • Communicate with the nasal passages through a small opening at the front of each sinus

Septum:

The septum is a thin bone that separates both sides of the inside of your nose. If your septum is deviated (crooked) this may block the passages to your sinuses.

Nasal cavity (nose)

The inside of your nose (nasal cavity) includes 3 turbinates on each side. Turbinates are structures that lie on the sidewalls of the inside of your nose. They heat and humidify the air you breath. If they are enlarged or inflamed, they might block the passages to your sinuses