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Pectoral Region Lect
Gross Anatomy of the Pectoral Region
| Question | Answer |
|---|---|
| Pec Major Clavicular Head Prox. | Anterior medial clavicle |
| Pec Major Sternocostal Head Prox. | Anterior sternum, superior 6 costal cartilages, and external oblique aponeurosis |
| Pec Major Dist. | Lateral Intertubercular Groove |
| Pec Major Act. | ADducts and Internally Rotates Humerus, Flexes Humerus (Clavicular Head), Extends Humerus (Sternocostal) |
| Pec Major Inn. | Medial and Lateral Pectoral Nerves |
| Pec Minor Prox. | 3-5 Ribs |
| Pec Minor Dist. | Medial Superior Coracoid Process |
| Pec Minor Act. | Stabilizes Scapula (pulls anteriorly and inferiorly) |
| Pec Minor Inn. | Medial Pectoral Nerve |
| Subclavius Prox. | 1st Rib and Costal Cartilage |
| Subclavius Dist. | Inferior medial 1/3 of clavicle |
| Subclavius Act. | Anchor and depress clavicle |
| Subclavius Inn. | Nerve to Subclavius |
| Serratus Anterior Prox. | External surface of ribs 1-8 |
| Serratus Anterior Dist. | Anterior medial scapular border |
| Serratus Anterior Act. | Scapular Protraction (primary) and Rotation |
| Serratus Anterior Inn. | Long Thoracic Nerve (SALT) |
| Deltopectoral Triangle Borders | Clavicle, Pec Major Clavicular Head, and Anterior Deltoid |
| Deltopectoral Triangle Contents | Cephalic Vein and Branch of Thoracoacromial Artery |
| 3 Superficial Pectoral Veins | Cephalic, Basilic, and Median Cubital |
| C3 Dermatome Area | Turtle Neck Section of Body |
| C4 Dermatome | Turtle Neck and Cape |
| C5 Dermatome | Lateral Arm to Proximal Forearm |
| C6 Dermatome | Lateral Forearm to Thumb |
| C7 Dermatome | Middle Finger |
| C8 Dermatome | Ulnar Side of Hand (Ring/Pinky Finger) |
| T1 Dermatome | Medial Side of Proximal Forearm and Arm to Axilla |
| Supraclavicular Cutaneous Nerve Inn. | Skin over clavicle and superolateral Pec Major |
| Radial Nerve continues as: | Posterior Brachial Cutaneous and Posterior Antebrachial Cutaneous nerves of arm and forearm |
| Musculocutaneous Nerve Inn. | Skin along Radial (Lateral) forearm to base of Thenar eminence |
| Axillary Cutaneous Nerve Inn. | Skin over Deltoid |
| Medial Brachial Cutaneous Nerve Inn. | Skin over Medial Arm |
| Medial Antebrachial Cutaneous Nerve Inn. | Skin over Medial Forearm |
Created by:
frankfrank05
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