Incisura thyreoidea superior is a medical term referring to a notch in the upper border of the thyroid cartilage of the larynx. The spelling of this term is quite complex due to the presence of multiple syllables and combination of various phonemes. In the International Phonetic Alphabet (IPA) transcription, we can see the /ɪnˈsɪ.sjʊr.ə ˌθaɪr.ɔɪˈdiː.ə s(j)uːˈpɪə.riːə/ sequence of sounds, with stress on the second syllable. The term can be a challenging word to pronounce, even for trained medical professionals.
The term "incisura thyreoidea superior" refers to a anatomical feature located in the upper section of the thyroid cartilage in the neck. Specifically, it describes a notch or groove present at the superior border of the thyroid cartilage.
The thyroid cartilage is the largest and most prominent cartilage of the larynx, commonly known as the Adam's apple. It is a shield-shaped structure that forms the anterior aspect of the larynx and protects the vocal cords and other structures within the larynx.
The incisura thyreoidea superior can be observed as a prominent indentation or gap at the upper border of the thyroid cartilage. This anatomical landmark plays an important role in identifying and distinguishing the thyroid cartilage from surrounding structures. It serves as a point of attachment for various muscles, ligaments, and other supporting structures of the larynx.
While the exact function of the incisura thyreoidea superior is not fully understood, it is known to contribute to the flexibility and movement of the larynx during swallowing, vocalization, and other vocal cord-related activities. Moreover, it aids in connecting the thyroid cartilage to other structures within the neck, such as the hyoid bone and sternum, establishing stability and support for overall neck movement and speech production.
A deep notch in the upper portion of the anterior border of the thyroid cartilage.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.