The spelling of the word "musculus cleidoepitrochlearis" can be quite intimidating for most beginners due to its length and complexity. However, understanding the IPA phonetic transcription can make it easier to comprehend. "Musculus" is pronounced /ˈmʌskjʊləs/, "cleido" is pronounced /ˈklaɪdəʊ/, "epi" is pronounced /ɛpɪ/, "trochlea" is pronounced /ˈtrɒklɪə/, and "aris" is pronounced /ərɪs/. Knowing the phonetic transcriptions can help in spelling this word with accuracy and confidence.
Musculus cleidoepitrochlearis, commonly known as the cleidoepitrochlear muscle, is a rare anatomical variant of a muscle located in the human body. This muscle is found in the upper extremities, specifically in the region where the clavicle (collarbone) and the humerus (upper-arm bone) meet.
The term "musculus cleidoepitrochlearis" consists of three main elements. "Musculus" refers to muscle in Latin, indicating its classification as a muscular structure. "Cleido" references the clavicle since it attaches to this bone, or clavicle, of the shoulder girdle. Lastly, "epitrochlearis" derives from "epi" (upon) and "trochlea" (a pulley), suggesting its attachment point above the trochlea of the humerus.
This muscle is present in a relatively small percentage of individuals, estimated to be around 2% of the population. It is typically characterized by a slender and elongated shape, extending diagonally from the clavicle to the medial epicondyle of the humerus. The musculus cleidoepitrochlearis can be mistaken for other muscles, such as the pronator teres or the brachioradialis.
Despite its rarity, the musculus cleidoepitrochlearis does not have a significant impact on human function or movement. Its presence or absence does not typically cause any notable clinical implications or physiological changes. Nonetheless, its recognition and knowledge are crucial for accurate anatomical descriptions and in the field of medicine, as it contributes to understanding the complex anatomy of the upper extremities.
The anterior portion of the deltoid, arising from the clavicle.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "musculus cleidoepitrochlearis" is a combination of Latin and Greek terms. Here is the breakdown:
1. Musculus: Latin word meaning "muscle".
2. Cleido-: Derived from the Greek word "kleis", meaning "clavicle". It refers to the clavicle bone (collarbone).
3. Epi-: Greek prefix meaning "upon" or "above".
4. -trochlearis: Latin word meaning "pulley". It refers to the triceps tendon passing over the trochlea of the humerus bone in the elbow joint.
Therefore, the etymology of "musculus cleidoepitrochlearis" describes a muscle positioned above the collarbone and passing over the trochlea of the humerus bone.