The spelling of the Latin word "musculus psoas minor or parvus" can be explained using the International Phonetic Alphabet (IPA). The first word, "musculus," is pronounced /ˈmʌskjʊləs/, with emphasis on the second syllable. The second word, "psoas," is pronounced /ˈsoʊ.əs/, with emphasis on the first syllable. The third word, "minor," is pronounced /ˈmaɪ.nər/, with emphasis on the first syllable. Finally, the word "parvus" is pronounced /ˈpɑːr.vʊs/ with emphasis on the first syllable. The correct spelling and pronunciation of this word is important for medical professionals and anatomy students.
Musculus psoas minor, also known as musculus psoas parvus, is a Latin term referring to a small muscle located in the human body. Found in the lumbar region, this muscle is situated next to the larger and more well-known psoas major muscle. The psoas minor muscle originates from the sides of the 12th thoracic and the first lumbar vertebrae, and it travels downward towards the pelvis. Unlike its larger counterpart, this muscle does not attach to the femur.
The primary function of the musculus psoas minor is to flex the lumbar spine, which involves bending it forward. It also plays a role in stabilizing the spine, offering support and assisting in maintaining an upright posture. Additionally, this muscle aids in internal rotation of the thigh.
Despite its name, the psoas minor muscle is usually absent in about half of the population. When it is present, it tends to be small and less significant compared to other muscles in the area. This muscle is generally weaker than the psoas major and therefore has a minimal impact on movement and overall function.
Understanding the anatomical details and functionality of the musculus psoas minor is essential in various fields, including anatomy, physiology, biomechanics, and physical therapy. Further research is underway to explore the role of this muscle and its potential implications on lower back pain and related conditions.
An inconstant muscle, absent in about 40 per cent.; origin, bodies of 12th thoracic and 1st lumbar vertebrae and disc between them; insertion, iliopectineal line and eminence with iliac fascia; nerve supply, lumbar plexus; action, makes iliac fascia tense.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.