Mod 2. Actions and Innervations

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Last updated 12:04 AM on 6/10/26
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12 Terms

1
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Pectoralis Major - Innervation

Medial and Lateral Pectoral Nerves; Clavicular head (C5-C7), Sternocostal head (C8-T1)

2
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Pectoralis Major - Actions

Clavicular - flexion, adduction, & medial rotation of humerus; Sternocostal - extension of flexed humerus

3
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Pectoralis Minor - Innervation

Medial and Lateral Pectoral Nerves (C5-T1)

4
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Pectoralis Minor - Actions

Depresses shoulder, anteriorly tilts scapula, aids in forced inspiration

5
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Subclavius - Innervation

Nerve to Subclavius (C5-C6)

6
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Subclavius - Actions

Depresses & stabilizes clavicle

7
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Serratus Anterior - Innervation

Long thoracic nerve (C5-C7)

8
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Serratus Anterior - Actions

Protracts scapula and facilitates upward rotation

9
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Deltoid - Innervation

Axillary Nerve (C5-C6)

10
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Deltoid - Anterior Actions

Flexion & Medial Rotation

11
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Deltoid - Lateral Actions

Abduction

12
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Deltoid - Posterior Actions

Extension, External Rotation, Horizontal Extension (Horizontal Abduction)