Sinus Diagram diagram and chart - Human body anatomy diagrams and charts with labels. This diagram depicts Sinus Diagram. Human anatomy diagrams show internal organs, cells, systems, conditions, symptoms and sickness information and/or tips for healthy living. This body anatomy diagram is great for learning about human health, is best for medical students, kids and general education.

Sinus Diagram

Sinuses are hollow, air-filled cavities that are located throughout the skull. There are several sets of sinuses in the head. The maxillary sinuses are behind the cheeks. The ethmoid sinuses lie under the inside corners of the eyes. The sphenoid sinuses are located behind the ethmoid sinuses.

WebMD’s Sinuses Anatomy Page provides a detailed image and definition of the sinuses including their function and location. Also learn about conditions, tests, and treatments affecting the sinuses. Skip to main content Check Your Symptoms

They are the most superior of the paranasal sinuses, and are triangular in shape. Drainage is via the frontonasal duct. It opens out at the hiatus semilunaris, within the middle meatus of the nasal cavity.