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


Recommended video: Medial wall of the nasal cavity [08:20]
Bones, cartilages and mucosa of the medial wall of the nasal cavity.

The choanae are oval-shaped openings that lie between the nasal cavity and the nasopharynx. The choanae are rigid openings that are completely surrounded by bone. They serve as an outflow from the nasopharynx into the mouth and throat.

Inferiorly, the choanae are bound by the posterior edge of the horizontal plate of the palatine bone. On the lateral aspect, they are bordered by the posterior margin of the medial pterygoid process. Medially, they are seperated into two by the posterior border of the vomer bone.

The roof of the choana is formed by the ala of the vomer and the vaginal process of the medial plate of the pterygoid process. Posteriorly, the roof is formed by the body of the sphenoid bone.

Term  English term: Choana, Posterior nasal aperture
Latin term: choana (singular), choanae (plural)
Location Between nasal cavity and nasopharynx 

Learn more about the choana in this study unit: 

Choana: 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!