Which part of the ear does the triangular fossa belong to?

The triangular fossa is a specific depression found within the structure of the auricle, which is the outer part of the ear. The auricle is composed of various anatomical features, including the helix, antihelix, lobule, and the triangular fossa. This particular feature is located between the two crura of the antihelix, making it an important landmark for both anatomical identification and for acupuncture points used in auricular therapy.

Understanding the specific regions of the ear is crucial for various medical and therapeutic practices, including acupuncture, where auricular points may correlate to different organs or systems in the body. The concha, external auditory canal, and middle ear represent different areas of the ear, each with distinct functions and structures that do not include the triangular fossa.