The presternal notch is a small indentation at the base of the neck, located between the collarbones. Its spelling can be broken down using the International Phonetic Alphabet (IPA) as "prɛ·ˈstɜ·rnəl nɑtʃ". Breaking it down further, "prɛ·" represents the "pre-" prefix meaning "before", "ˈstɜ·rnəl" refers to the sternum or breastbone, and "nɑtʃ" represents the word "notch". The proper spelling of the presternal notch may be challenging to remember, but understanding the IPA breakdown can make it easier to sound out and spell correctly.
The presternal notch, also known as the suprasternal notch or the jugular notch, is a prominent anatomical feature located at the base of the neck in the front of the chest. It is a slight depression or hollow situated between the two clavicles (collarbones) just above the sternum (breastbone). The term "presternal" refers to its location in front of the sternum.
The presternal notch serves as an important landmark in human anatomy, aiding in the identification of anatomical structures and establishing reference points for medical examinations. It acts as a demarcation point between the neck and the chest region. This indentation provides attachment points for several key structures, such as ligaments, muscles, and tendons.
The presternal notch has clinical significance in various medical procedures. For instance, during cardiopulmonary resuscitation (CPR), it serves as a location for proper hand placement. In emergency situations, medical professionals might use this landmark to assess respiratory distress or to guide procedures related to the airway, such as intubation. Moreover, it can be utilized as a reference point when examining the trachea or palpating the lymph nodes found in the neck.
Overall, the presternal notch constitutes an important anatomical structure that aids in the identification of critical landmarks, assists in medical procedures, and serves as a crucial reference point for various assessments and examinations.
Incisura jugularis.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "presternal" is derived from the combination of two Latin words: "prae" which means "in front of" or "before", and "sternum" which refers to the bony structure in the center of the chest. The term "notch" simply means a small indentation or cut.
Therefore, the etymology of the word "presternal notch" would translate to something like "the small indentation in front of the sternum". The presternal notch, also known as the suprasternal notch or jugular notch, is the visible hollow area located at the base of the neck, just above the sternum.