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KIN/Muscle OIA

General review of muscles.

QuestionAnswer
The origin of the trapezius. 1. External occipital protruberance. 2. Medial portion of the superior nuchal line. 3. Ligamentum nuchae. 4. Spinous processes of C7-T12.
The instertion of the trapezius. 1. Lateral 1/3 of clavical. 2. Acromion.Spine of the scapula.
The actions of the upper fibers of the trapezius. 1. Bilaterally: extend the head and neck. 2. Unilaterally: laterally flex the head and neck to the same side. Rotate the head and neck to opposite side. Elevate the scapula. Upwardly rotate the scapula.
The actions of the middle fibers of the trapezius. 1. Adduct the scapula. 2. Stabilize the scapula.
The actions of the lower fibers of the trapezius. 1. Depress the scapula. 2. Upwardly rotate the scapula.
The origin of the deltoid. 1. Lateral 1/3 of clavical. 2. Acromion 3. Spine of the scapula.
Insertion of the deltoid. Deltoid tuberosity.
Action shared by all deltoid fibers. Abduct the shoulder.
Actions of the anterior fibers of the deltoid. 1. Flex the shoulder. 2. Medially rotate the shoulder. 3. Horizontally adduct the shoulder.
Actions of the posterior fibers of the deltoid. 1. Extend the shoulder. 2. Laterally rotate shoulder. 3. Horizontally abduct the shoulder.
What diagonal muscles do. Rotation.
Created by: kerwin90
 

 



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