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Anterior Shoulder Muscles
anterior shoulder muscles
19
Anatomy
Graduate
09/14/2013

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Cards

Term
Anterior Shoulder Muscles
Definition
  • Pectoralis Major
  • Pectoralis Minor
  • Serratus Anterior
  • Subclavius
  • Biceps Brachii
  • Coracobrachialis
Term
Pectoralis Major Attachments
Definition
  • Medial 1/3 of Clavicle
  • Anterior aspect of Sternum
  • Aponeurosis of External Abdominal Oblique Muscle
  • Crest of Greater Tubercle of Humerus
Term
Pectoralis Major Movements
Definition
  • Scapulothoracic Movements
    • Depression (Sternocostal Portion)
  • GH Joint Movements
    • Flexion (Clavicular Portion)
    • Internal Rotation (both)
    • Horizontal Adduction (clavicular portion)
    • Adduction (Sternocostal Portion)
    • Extension from flexed position to neutral (Sternocostal portion)
      • Can't extend beyond neutral
Term
Pectoralis Major Nerve Innervation
Definition
  • Lateral Pectoral Nerve (Clavicular portion)
  • Medial Pectoral Nerve (Sternocostal portion)
Term
Pectoralis Minor Attachments
Definition
  • External Surfaces Ribs 3-5
  • Coracoid Process of the Scapula
Term
Pectoralis Minor Movements
Definition
  • Scapulothoracic Movements
    • Depression
    • Downward Rotation
  • AC Joint Movements
    • Anterior Tilt
Term
Pectoralis Minor Nerve Innervation
Definition
  • Medial Pectoral Nerve
Term
Serratus Anterior Attachments
Definition
  • External surfaces Ribs 1-8
  • Medial border of Scapula
Term
Serratus Anterior Movements
Definition
  • Scapulothoracic Movements
    • Protraction
    • Upward Rotation (Inferior fibers)
    • Depression (Inferior fibers)
  • Maintains medial border close to ribs (prevents winging)
Term
Serratus Anterior Nerve Innervation
Definition
  • Long Thoracic Nerve
Term
Subclavius Attachments
Definition
  • 1st Rib
  • Posterior-Inferior Clavicle
Term
Subclavius Movement
Definition
  • Scapulothoracic Movements
    • Stabilizes Clavicle
    • Depression
Term
Subclavius Nerve Innervation
Definition
  • Nerve to Subclavius
Term
Biceps Brachii Attachments
Definition
  • Supraglenoid Tubercle of the Scapula (Long Head)
  • Coracoid Process of Scapula (Short Head)
  • Tuberosity of the Radius
  • Deep Fascia of Forearm via Bicipital Aponeurosis
Term
Biceps Brachii Movement
Definition
  • GH Joint Movements
    • Flexion (Long & Short Heads)
    • Abduction (Long Head) (when in external rotation)
    • Adduction (Short Head)
Term
Biceps Brachii Nerve Innervation
Definition
  • Musculocutaneous Nerve
    • innervates muscle & skin
Term
Coracobrachialis Attachments
Definition
  • Coracoid Process of the Scapula
  • Middle of the shaft of the Humerus
Term
Coracobrachialis Movement
Definition
  • GH Movements
    • Flexion
    • Adduction
Term
Coracobrachialis Nerve Innervation
Definition
  • Musculocutaneous nerve
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