General review of muscles.
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| 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.
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| The instertion of the trapezius. | 1. Lateral 1/3 of clavical. 2. Acromion.Spine of the scapula.
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| 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.
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| The actions of the middle fibers of the trapezius. | 1. Adduct the scapula. 2. Stabilize the scapula.
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| The actions of the lower fibers of the trapezius. | 1. Depress the scapula. 2. Upwardly rotate the scapula.
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| The origin of the deltoid. | 1. Lateral 1/3 of clavical. 2. Acromion 3. Spine of the scapula.
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| Insertion of the deltoid. | Deltoid tuberosity.
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| Action shared by all deltoid fibers. | Abduct the shoulder.
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| Actions of the anterior fibers of the deltoid. | 1. Flex the shoulder. 2. Medially rotate the shoulder. 3. Horizontally adduct the shoulder.
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| Actions of the posterior fibers of the deltoid. | 1. Extend the shoulder. 2. Laterally rotate shoulder. 3. Horizontally abduct the shoulder.
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| What diagonal muscles do. | Rotation.
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Created by:
kerwin90