The spelling of the word "musculus mylohyoideus" may seem daunting, but with the help of IPA phonetic transcription, it becomes easier to understand. The word consists of four syllables: mus-cu-lus my-lo-hy-oi-deus, with emphasis on the third syllable. The "c" in "musculus" is pronounced like a "k" sound, and the "h" in "mylohyoideus" is silent. The correct pronunciation is "MUHS-kyuh-luhs my-loh-hy-OY-dee-uhs." This term refers to the muscle located beneath the chin that is responsible for elevating the hyoid bone during swallowing.
Musculus mylohyoideus, commonly known as the mylohyoid muscle, is a paired muscle located in the neck region. It is a flat, thin, triangular-shaped muscle that lies beneath the chin and spans between the mandible (lower jaw) and the hyoid bone.
The mylohyoid muscle is part of the suprahyoid muscles, a group of muscles that are involved in the movements of the tongue, hyoid bone, and the floor of the mouth. It plays a vital role in the process of swallowing and in stabilizing the hyoid bone during mandibular movements.
The muscle originates from the mylohyoid line, a ridge on the inner surface of the mandible, and then extends downwards to attach to the body and greater horn of the hyoid bone.
When the mylohyoid muscle contracts, it elevates the hyoid bone, helping to support the floor of the mouth and assisting in swallowing actions. It also contributes to the opening and widening of the oral cavity during speech and other oral functions.
Innervation of the mylohyoid muscle is provided by the mylohyoid nerve, a branch of the mandibular division of the trigeminal nerve (cranial nerve V). This nerve supplies motor fibers to the muscle, enabling its contractions and movements.
Overall, the musculus mylohyoideus serves important functions in the oropharyngeal region, participating in the processes of swallowing, speech, and maintaining oral cavity stability.
Origin, mylohyoid line of mandible; insertion, upper border of hyoid bone and raphe separating muscle from its fellow; action, elevates floor of mouth and the tongue, depresses jaw when hyoid is fixed; nerve supply, mylohyoid from third division of trigeminus.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The term "musculus mylohyoideus" is derived from Latin and Greek roots.
The word "musculus" directly translates to "muscle" in Latin. It is derived from the Latin word "mus" meaning "mouse" due to the similarity of some muscles to the shape of a small mouse.
The word "mylohyoideus" is a compound word consisting of two components: "mylo-" and "-hyoideus".
The prefix "mylo-" comes from the Greek word "mylē" meaning "molar tooth". It refers to the mylohyoid muscle's attachment to the lower jaw (mandible) near the roots of the molars.
The suffix "-hyoideus" is derived from the Greek word "hyoeidēs" meaning "shaped like the letter upsilon (υ)".