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The posterior scalene, (Latin: scalenus posterior) is the smallest and most deeply seated of the scalene muscles. It arises, by two or three separate tendons, from the posterior tubercles of the transverse processes of the lower two or three cervical vertebrae, and is inserted by a thin tendon into the outer surface of the second rib, behind ...
The infrahyoid muscles, or strap muscles, are a group of four pairs of muscles in the anterior (frontal) part of the neck. [1] The four infrahyoid muscles are the sternohyoid, sternothyroid, thyrohyoid and omohyoid muscles. [1] Excluding the sternothyroid, the infrahyoid muscles either originate from or insert on to the hyoid bone. [2]
The prevertebral muscles are the muscles located between the prevertebral fascia (older definition) and the vertebral column, i.e., the longus capitis, [1] longus colli, [1] rectus capitis anterior, and rectus capitis lateralis [2] muscles.
The prevertebral fascia is prolonged downward and laterally behind the carotid vessels and in front of the scalene muscles. It forms a sheath for the brachial nerves , subclavian artery , and subclavian vein in the posterior triangle of the neck; it is continued under the clavicle as the axillary sheath and is attached to the deep surface of ...
The sternocleidomastoid muscle is tested by asking the patient to turn their head to the left or right against resistance. [8] One-sided weakness of the trapezius may indicate injury to the nerve on the same side of an injury to the spinal accessory nerve on the same side (Latin: ipsilateral) of the body being assessed. [8]
Muscle [3] Visual reference Method of activation 1: Anterior and middle scalenes: Look straight ahead and lift head anterior 2: Posterior scalenes: Turn head 30 degrees away and lift anterior 3-5: Pectoralis minor: Push ipsilateral elbow towards opposite ASIS. 6-8: Serratus Anterior: Push arm anteriorly 9-11: Latissimus dorsi
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The transversus thoracis muscle (/ t r æ n z ˈ v ɜːr s ə s θ ə ˈ r eɪ s ɪ s /), also known as triangularis sterni, lies internal to the thoracic cage, anteriorly.It is usually a thin plane of muscular and tendinous fibers, however on athletic individuals it can be a thick 'slab of meat', situated upon the inner surface of the front wall of the chest.