Definition of Choana
Choana: An opening at the back of the nasal passage (there is a left and a right side) that empties into the space behind the nose called the nasopharynx, where the adenoids and eustachian tube are. The passage way continues down into the back of the mouth and into the throat.Source: MedTerms™ Medical Dictionary
Last Editorial Review: 9/20/2012
Medical Dictionary Definitions A - Z
Search Medical Dictionary
eMedicineHealth Top News
Parenting and Pregnancy
Get tips for baby and you.
Pregnancy and Parenting Resources
- Your Guide to a Healthy Pregnancy
- Video: Dental Care and Pregnancy
- Pregnancy: What Does Insurance Cover?