The spelling of "incisura terminalis auris" may seem intimidating at first glance, but breaking it down phonetically using the International Phonetic Alphabet (IPA) can make it easier to understand. The word is pronounced as "ɪnˈsaɪs.jʊrə tɜː.mɪˈneɪ.lɪs ɔːrɪs". The "incisura" is pronounced with a stress on the second syllable, while "terminalis" and "auris" each have stress on the first syllable. The use of the IPA helps to clarify the pronunciation of this complex anatomical term.
The term "incisura terminalis auris" refers to a specific anatomical structure found within the external ear, known as the auricle or pinna. The auricle is the visible portion of the ear that is composed of flexible cartilage covered by skin. The incisura terminalis auris is a small groove or depression located on the anterior border of the auricle, near its upper part.
This anatomical feature serves as a demarcation point between two main regions of the auricle. In particular, it separates the superior part of the auricle, called the helix, from the inferior part, known as the antihelix. The helix is the curved external rim of the auricle, extending from the superior part to the middle of the ear, while the antihelix is a Y-shaped ridge located below the helix.
The incisura terminalis auris can be identified by its slight indentation or a shallow notch, which may vary in depth among individuals. It serves as an important landmark for anatomical references and helps in understanding the complex structure and organization of the auricle. The distinct separation it provides contributes to the overall shape and unique characteristics of each person's external ear.
Terminal notch of the auricle, a deep notch separating the lamina tragica and cartilage of the external auditory meatus from the main auricular cartilage, the two being connected below by the isthmus.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.