The correct spelling of the word "nervus thoracalis longus" refers to a long thoracic nerve that contains sensory and motor fibers. The phonetic transcription in IPA for the correct pronunciation of this word is /ˈnɜrvəs/ /θɔːˈreɪsɪs/ /ˈlɒŋɡəs/. The phoneme /θ/ is pronounced as "th" in "think". The "o" in "thoracalis" and "longus" is pronounced as "aw" in "law". Proper spelling and pronunciation of medical terms are essential to ensure accurate communication between healthcare professionals and patients.
Nervus thoracalis longus is a Latin term that translates to "long thoracic nerve" in English. It is a significant nerve found in the human body, specifically in the thoracic region. The nerve originates from the anterior rami of the fifth, sixth, and seventh cervical spinal nerves, denoting its location in the brachial plexus.
The nervus thoracalis longus proceeds downwards alongside the lateral border of the scapula, moving on the underside of the serratus anterior muscle. Throughout its course, it provides innervation to the serratus anterior muscle, which is responsible for various movements of the scapula, including protraction and rotation. The serratus anterior muscle plays a crucial role in stabilizing and positioning the scapula during upper limb movements.
Damage or injury to the nervus thoracalis longus can result in a condition called winged scapula, characterized by an abnormal protrusion of the scapula away from the thoracic wall. This condition significantly impairs the normal movements of the upper limb, leading to weakness and reduced range of motion. Treatment for winged scapula typically involves physical therapy focused on strengthening the serratus anterior muscle, as well as addressing any underlying causes of the nerve damage.
In summary, the nervus thoracalis longus is a vital nerve found in the thoracic region, responsible for innervating the serratus anterior muscle and enabling proper movements and stabilization of the scapula.
Long thoracic nerve, posterior thoracic, external respiratory nerve of Bell, arises from the 5th, 6th, and 7th cervical nerves, descends the neck behind the brachial plexus, and is distributed to the serratus magnus muscle.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.