The mandibular notch is a feature of the lower jawbone. Its spelling is influenced by the pronunciation of the word. In IPA phonetic transcription, it is represented as /mændɪbjʊlər nɒtʃ/. The first syllable "man" is pronounced with a short "a" sound, the second syllable "di" is pronounced with a short "i" sound, and the stress in the word falls on the third syllable "bu". The final syllable "lar" is pronounced with a silent "r" and the "ch" sound in "notch" is a voiceless postalveolar affricate.
The term "mandibular notch" refers to a specific anatomical feature located on the inferior border of the human mandible, also known as the lower jawbone. It is a U-shaped depression or concavity located in the center of the jawbone, between the two bony prominences called the coronoid process and the condylar process.
The mandibular notch is an important landmark as it serves as a dividing point between these two processes. The coronoid process, found on the anterior portion of the mandible, is a bony prominence that provides attachment for the muscles involved in chewing. On the other hand, the condylar process is located towards the posterior end of the mandible and forms the articulation point with the temporal bone, allowing for the hinge-like movement of the jaw.
Moreover, the mandibular notch plays a crucial role in the mandibular movement and function. It allows for the opening and closing of the mouth and facilitates the range of motion during mastication and other activities like talking and swallowing. The depth and width of the mandibular notch can vary between individuals, influencing their oral functions and overall jaw stability.
Overall, the mandibular notch is an essential anatomical structure within the mandible that forms a boundary between the coronoid and condylar processes and contributes to the proper function of the lower jaw, aiding in vital processes such as eating, speaking, and facial expression.
Incisura mandibulae.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "mandibular" originates from the Latin term "mandibula", which means "jaw" or "lower jawbone". It is derived from the verb "mandere", meaning "to chew" or "biting". "Notch" on the other hand, comes from the Middle English word "noche", which emerged from the Old English term "hoh", meaning "a cut" or "a hollow". When combined, "mandibular notch" refers to a hollow or indentation in the mandible bone, specifically in the area where the lower jawbone forms a distinctive curve.