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12 Cards in this Set

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Pectoralis Major: Proximal Attachment

Attachment


a. Proximal


- Clavicular Head:


* Clavicle (Medial), anterior border


- Sternocostal Head:


* Sternum -- anterior surface
* Ribs 1-6 - Costal Cartilage
* Aponeurosis of External Oblique Muscle

Pectoralis Major: Distal Attachment

Attachment


b. Distal


- Humerus: Lateral Lip of Intertubercular Groove

Pectoralis Major: Innervation

Innervation:


a. Lateral Pectoral Nerve


b. Medial Pectoral Nerve

Pectoralis Major: Action


Action:


a. Shoulder adduction and medial rotation


b. clavicular head: shoulder flexion


c. sternocostal head: shoulder extension from a flexed position

Pectoralis Minor: Proximal Attachment

Attachment:


a. Proximal


- Ribs 3-5 (near costal cartilage)

Pectoralis Minor: Distal Attachment

b. Distal


- Scapula - coracoid process

Pectoralis Minor: Innervation


Innervation: Medial Pectoral Nerve

Pectoralis Minor: Action


Action:


a. Scapula Depression


b. Scapula Downward Rotation

Serratus Anterior: Proximal Attachment

Attachment:


a. Proximal: Ribs 1-8 (Lateral)

Serratus Anterior: Distal Attachment

Attachment


b. Distal: Scapula - Anterior Surface of Medial Border

Serratus Anterior: Innervation

Innervation: Long Thoracic Nerve`

Serratus Anterior: Action


Action:


a. Scapula Protraction


b. Scapula Upward rotation