Sinuses

Sinuses

Species Differences

• DOG
• Cavities inside head = sinuses
• Sinuses are spaces within the bony part of the
• head - bone around outside with mucosal lining
• True sinus in dog is frontal sinus
• Maxillary sinus = not a real sinus not between
• two bones but in a recess
• HORSE
• Really large - extensive to reduce
• weight of head- with age developing teeth move out of sinus - head gets larger
• Tooth disease major cause and sign of sinusitis
• Continual communication between the sinuses - route is flow of one into another
• Route = frontal sinus - rostral maxillary sinus - caudal maxillary sinus - nasal cavity
• Understand the flow of sinuses and therefore
• mucous / pus - need to know when tapped sound solid (full of mucous) not
• hollow.