Origins, Insertions, Actions and Inervations of Shoulder Muscles
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| show | O:Lateral third of the clavicle
I:Deltoid tuberosity
A:Shoulder abd, flexion, IR, horizontal add
N:Axillary nerve (C5,C6)
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| show | O:Acromion process
I:Deltoid tuberosity
A:Shoulder abduction
N:Axillary nerve (C5,C6)
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| show | O:Spine of scapula
I:Deltoid tuberosity
A:Shoulder abd, extension, hyperextension, ER, horizontal abd
N:Axillary nerve (C5,C6)
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| Supraspinatus | show 🗑
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| show | O:Medial third of clavicle
I:Lateral lip of bicepital groove of humerus
A:Shoulder flexion-first 60 degrees
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| show | O:Sternum, costal cartilage of first six ribs
I:Lateral lip of bicepital groove of humerus
A:Shoulder extension-first 60 degrees (from 180-120)
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| show | O:Medial third of clavicle and sternum and costal cartilage of first six ribs
I:Lateral lip of bicepital groove of humerus
A:Shoulder add, IR, and horizontal add
N:Lateral and medial pectoral nerve (C5,C6,C7,C8,T1)
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| show | O:Spinous processes of T7-L5, posterior surface of sacrum, illiac crest, and lower three ribs
I:Medial lip of biciptal groove of humerus
A:Shoulder extension, add, IR, hyperextension
N:Thoracodorsal nerve(C6,C7,C8)
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| Teres Major | show 🗑
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| Infraspinatus | show 🗑
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| Teres Minor | show 🗑
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| Subscapularis | show 🗑
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| show | O:Coracoid process of scapula
I:Medial surface of humerus near midpoint
A:Stabilizes shoulder joint
N:Musculocutaneous nerve (C6,C7)
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| Upper Trapezius | show 🗑
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| show | O:Spinous processes of C7 through T3
I:Scapular spine
A:Scapular retraction
N:Spinal accesory (cranial nerve XI)
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| Lower Trapezius | show 🗑
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| Levator Scapula | show 🗑
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| Rhomboids | show 🗑
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| Serratus Anterior | show 🗑
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| show | O:Anterior surface of third through fifth ribs
I:Coracoid process of the scapula
A:Scapular depression, protraction, downward rotation, and tilt
N:Medial pectoral nerve (C8,T1)
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| show | 1
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Created by:
paro75
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