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The trapezius has three functional regions: the superior region ( descending part ), which supports the weight of the arm ; the intermediate region ( transverse part ), which retracts the scapulae ; and the inferior region ( ascending part ), which medially rotates and depresses the scapulae.
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trapezius and has
The sternocleidomastoid muscle tilts and rotates the head, while the trapezius muscle has several actions on the scapula, including shoulder elevation and adduction of the scapula.
The trapezius has evolved separately, but the other muscles in this group evolved from the first eight or ten ribs and the transverse processes of the cervical vertebrae ( homologous to the ribs ).
trapezius and three
Muscle imbalances, which can heavily affect posture and compromise shoulder health, can result if all three sections of the trapezius are not developed equally.
The trapezius evolved separately, but the other three muscles in this group evolved from the first eight or ten ribs and the transverse processes of the cervical vertebrae ( homologous to the ribs ).
Spinotrapezius, also called thoracic trapezius, is the most posterior of the three.
The trapezius evolved separately, but the other three muscles in this group evolved from the first eight or ten ribs and the transverse processes of the cervical vertebrae ( homologous to the ribs ).
trapezius and superior
The superior or upper fibers of the trapezius arise from the external occipital protuberance, the medial third of the superior nuchal line of the occipital bone ( both in the back of the head ), and the ligamentum nuchae.
It is possible to feel the muscles of the superior trapezius become active by holding a weight in one hand in front of the body and, with the other hand, touching the area between the shoulder and the neck.
One of the muscles within the floor of the posterior triangle of the neck, the superior part of levator scapula is covered by sternocleidomastoid and its inferior part by the trapezius.
It runs lateral beneath the trapezius and the omohyoideus, and enters the supraspinatous fossa through the suprascapular notch, below the superior transverse scapular ligament ; it then passes beneath the supraspinatus, and curves around the lateral border of the spine of the scapula to the infraspinatous fossa.
trapezius and region
The latissimus dorsi ( plural: latissimi dorsi ), meaning ' broadest of the back ' ( Latin latus meaning ' broad ', latissimus meaning ' broadest ' and dorsum meaning the back ), is the larger, flat, dorso-lateral muscle on the trunk, posterior to the arm, and partly covered by the trapezius on its median dorsal region.
trapezius and part
It then passes through the trapezius muscle and ascends to innervate the skin along the posterior part of the scalp to the vertex.
Levator scapulae forms part of the latter group together with rhomboid major, rhomboid minor, serratus anterior, and trapezius.
Stretching from the spine to the scapula, rhomboid major forms part of the latter group together with rhomboid minor, serratus anterior, levator scapulae, and trapezius.
Serratus anterior forms part of the latter group together with rhomboid major, rhomboid minor, levator scapulae, and trapezius.
trapezius and ),
The trapezius muscle resembles a trapezium ( trapezoid in American English ), or diamond-shaped quadrilateral.
The middle fibers of the trapezius arise from the spinous process of the seventh cervical ( both in the back of the neck ), and the spinous processes of the first, second, and third thoracic vertebrae.
When the scapulae are stable ( such as lying on one's back, or using muscles to fix them in space ), trapezius contractions can cause spinal movements, particularly the upper fibers on the cervical vertebrae, a co-contraction of both sides can extend the neck.
In addition to the major phasic ( dynamic ) muscles the bench press also uses tonic ( stabilising ) muscles: scapular stabilisers ( serratus anterior, middle and inferior trapezius ), humeral head stabilisers ( rotator cuff muscles ), and core ( transverse abdominis, obliques, multifidus, erector spinae, quadratus lumborum )
Substernal or left precordial pleuritic chest pain with radiation to the trapezius ridge ( the bottom portion of scapula on the back ), which is relieved by sitting up and bending forward and worsened by lying down ( recumbent or supine position ) or inspiration ( taking a breath in ), is the characteristic pain of pericarditis.
* Strengthen the muscles of the forearm ( Pronator quadratus, Pronator teres and Supinator muscle ), the upper arm ( biceps, triceps, Deltoid muscle ), the shoulder and upper back ( trapezius )
The lat's functions are also assisted, both by shoulder extensors ( teres major, posterior deltoid, infraspinatus, teres minor ), scapular downward rotators ( rhomboids, levator scapulae ), and scapular depressors ( lower trapezius and pectoralis muscles ).
trapezius and which
CN X ( 10 ) receives visceral sensory information from the thorax and abdomen, and CN XI ( 11 ) is responsible for innervating the sternocleidomastoid and trapezius muscles, neither of which is exclusively in the head.
A 1000 case four year observational study published in 2012 said that the " missing link " in whiplash injuries is the trapezius muscle which may be damaged through eccentric muscle contraction during the whiplash mechanism described above and below.
Injury to the spinal accessory nerve can cause an accessory nerve disorder or spinal accessory nerve palsy, which results in diminished or absent function of the sternocleidomastoid muscle and upper portion of the trapezius muscle.
This is often accomplished through gross observation, range of motion testing, and strength testing, with specific attention to the trapezius and sternocleidomastoid muscles which are innervated by the spinal accessory nerve.
The sternocleidomastoid is within the investing fascia of the neck, along with the trapezius muscle, with which it shares its nerve supply ( the accessory nerve ).
Downward rotation would be prevented by co-contraction of other muscles that elevate the spine, the upper fibers of the trapezius, which is an upward rotator.
trapezius and weight
The trapezius muscle is unable to hold up the distal fragment owing to the weight of the upper limb, and thus the shoulder droops.
The shoulder shrug ( usually called simply the shrug ) is an exercise in weight training used to develop the upper trapezius muscle.
trapezius and ;
It is bounded above by the trapezius, below by the latissimus dorsi, and laterally by the vertebral border of the scapula ; the floor is partly formed by the rhomboideus major.
Depending on the line of pull, the trapezius muscles can be recruited as well ; horizontal pulling motions such as rows recruit both latissimus dorsi and trapezius heavily.
The number of vertebral attachments varies ; a slip may extend to the occipital or mastoid, to the trapezius, scalene or serratus anterior, or to the first or second rib.
trapezius and retracts
Together with the rhomboid major, the rhomboid minor retracts the scapula when trapezius is contracted.
trapezius and scapulae
Contraction of the trapezius muscle can have two effects: movement of the scapulae when the spinal origins are stable, and movement of the spine when the scapulae are stable.
The upper and lower trapezius fibers also work in tandem with the serratus anterior to upwardly rotate the scapulae, such as during an overhead press.
In both the carrying of heavy loads and in lateral raises, the deltoid often contracts in tandem with scapular elevators such as the levator scapulae, upper trapezius or serratus anterior.
The levator scapulae may lie deep to the sternocleidomastoideus at its origin, deep or adjacent to the splenius capitis at its origin and mid-portion, and deep to the trapezius in its lower portion.
Antagonists to this function ( upward rotators of the scapulae ) are the serratus anterior and upper and lower fibers of the trapezius.
Acting as an antagonist to the trapezius, both rhomboids elevate the medial border of the scapula medially and upward, working in tandem with the levator scapulae muscle to rotate the scapulae downward.
When done as a weight-lifting exercise, its purpose is to exercise the muscles that draw the rower's arms toward the body ( latissimus dorsi ) as well as those that retract the scapulae ( trapezius and rhomboids ) and those that support the spine ( erector spinae ).
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