Connection lost. Please refresh the page.
Get help How to study Login Register
Ready to learn?
Pick your favorite study tool

Maxillary sinus

Recommended video: Anatomy of the skull [10:46]
Introduction to the bones that make up the skull.

The maxillary sinus is the largest paranasal sinus situated in the body of the maxilla. The maxillary sinus is connected with the middle nasal meatus via the maxillary ostium.

The maxillary sinus is bordered by three main walls:

  • The roof – is a thin bony plate shared with the inferior wall of the orbit
  • The floor – is composed by the alveolar process of the maxilla. It hosts a couple of elevations formed by the roots of the maxillary teeth. This can be a potential pathway for infection of the sinus, mainly during a complicated dentist procedure.
  • The base – makes the inferior portion of the lateral wall of the nasal cavity

The maxillary sinus is vascularized mainly by the branches of maxillary artery and innervated by the branches of the maxillary nerve.

Terminology English: Maxillary sinus
English synonyms:
 Sinus paranasalis maxillaris, Sinus Highmori
: Sinus maxillaris
Latin synonyms:
 Antrum of Highmore, Maxillary paranasal sinus
Definition The maxillary sinus is a paired paranasal sinus situated in the body of the maxilla. 
Main parts Base, roof, floor

Learn more about the sinuses of the skull with the following study unit: 

Maxillary sinus: want to learn more about it?

Our engaging videos, interactive quizzes, in-depth articles and HD atlas are here to get you top results faster.

What do you prefer to learn with?

“I would honestly say that Kenhub cut my study time in half.” – Read more.

Kim Bengochea Kim Bengochea, Regis University, Denver
© Unless stated otherwise, all content, including illustrations are exclusive property of Kenhub GmbH, and are protected by German and international copyright laws. All rights reserved.

Register now and grab your free ultimate anatomy study guide!