trapezius


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Related to trapezius: latissimus dorsi

tra·pe·zi·us (mus·cle)

[TA]
extrinsic (thoracoappendicular) muscle of shoulder; origin, medial third of superior nuchal line, external occipital protuberance, ligamentum nuchae, spinous processes of seventh cervical and the thoracic vertebrae and corresponding supraspinous ligaments; insertion, lateral third of posterior surface of clavicle, anterior side of acromion, and upper and medial border of the spine of the scapula; action, when scapulae are fixed, portions of muscle can act independently: cervical portion elevates scapula, thoracic portion contributes to depression of scapula; upper and lowermost portions act simultaneously to rotate glenoid fossa superiorly; when the entire muscle and especially middle part contracts, the scapulae retract; draws head to one side or backward; nerve supply, motor by accessory, sensory by cervical plexus.
Synonym(s): musculus trapezius [TA], cowl muscle
Farlex Partner Medical Dictionary © Farlex 2012

trapezius

(trə-pē′zē-əs)
n. pl. trapezi·uses
Either of two large flat triangular muscles running from the base of the occiput to the middle of the back that support and make it possible to raise the head and shoulders.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

tra·pe·zi·us mu·scle

(tră-pē'zē-ŭs mŭs'ĕl)
Origin, medial third of superior nuchal line, external occipital protuberance, ligamentum nuchae, spinous processes of seventh cervical and the thoracic vertebrae and corresponding supraspinous ligaments; insertion, lateral third of posterior surface of clavicle, anterior side of acromion, and upper and medial border of the spine of the scapula; action, when scapulae are fixed, portions of muscle can act independently: cervical portion elevates scapula, thoracic portion contributes to depression of scapula; upper and lowermost portions act simultaneously to rotate glenoid fossa superiorly; when the entire muscle and especially its middle part contracts, the scapulae retract; draws head to one side or backward; nerve supply, motor by accessory, sensory by cervical plexus.
Synonym(s): musculus trapezius [TA] , trapezius.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
The EMG signals from upper (UT), medium (MT) and lower trapezius (LT), upper (AS_5th) and lower portion (AS_7th) of the anterior serratus, external (EO) and internal oblique (IO) were obtained using simple active differential surface electrodes composed of two parallel rectangular bars of pure silver.
* The defect which developed on the donor site of trapezius flap was covered with STSG from right thigh.
Decremental responses were most frequently seen in the trapezius (55.0%) followed by the deltoid (52.9%).
We followed the Surface Electromyography for the Non-Invasive Assessment of Muscles (SENIAM) guidelines for electrode placement on upper and lower trapezius, anterior, middle and posterior deltoid muscles, and serratus anterior muscles (Hermens et al., 1999).
Singh M1, Rios Diaz AJ, Cauley RUse of Pedicled Trapezius Myocutaneous Flap for Posterior Skull Reconstruction.
Chronic pain, such as upper quadrant pain or trapezius pain that may not respond to the traditional physical therapy (heat, exercise, and massage) may be relieved with DN treatment and therapists need to consider this new modality when treating chronic pain.
It has been suggested by several authours hthat the upper trapezius is overactive in patients with SIS and SD5 based on EMG test results during glenohumeral articulation.
The upper extremity was supported on a pillow to avoid excessive horizontal adduction so that the superomedial scapular angle was situated just underneath the middle trapezius. A 10 cm longitudinal incision was made along and 3 cm medial to the medial scapular border, centering at the most proximal end of the scapular spine.
SAN injury results in loss of motor function of the trapezius muscle and primarily leads to shoulder dysfunction and shoulder pain.
Acromion-greater tuberosity (A-GT) distance and thicknesses of supraspinatus, upper trapezius, and posterior deltoid muscles were measured.