Download 4 - Anterior Thoracoappendicular Muscles

Warning: This information may contain mistakes. You are ultimately responsible for
verification. Revised: 5/25/2004
4 - Anterior Thoracoappendicular Muscles
Lateral & Medial Pectoralis n. (C5-T1)
 Pectoralis Major (med rotation, adduction, flex humerus)
Medial Pectoralis n. (C8-T1)
 Pectoralis Minor (anterior/inferior, & also fixes scapula)
Subclavius n. (C5,6)
 Subclavius (resists superior displacement)
Long Thoracic n. (C5,6,7)
 Serrattus Anterior (Boxer’s Muscle, protracts scapula)
4 - Posterior Thoracoappendicular Muscles
2- Superficial Posterior Thoracoappendicular (extrinsic shoulder)
Spinal Accessory n. (CN XI - motor) & C3-4 (P&P)
 Trapezius (retracts, elevates, & superior rotation of scapula.
Inferior fibers depress. Also tilt chin and aid in deep
respiration)
Thoracodorsal n. (C6,7,8)
 Latissimus Dorsi (adduct, extend and medially rotate
humerus)
2-Deep Posterior Thoracoappendicular (extrinsic shoulder)
Dorsal Scapula n. (C5)
 Levator Scapulae (elevate and inferior rotation of scapula.
Extends the head)
 Rhomboids Major and Minor (adduct and inferior rotation of
scapula. Fixes scapula)
Todd Glass
Fall 2003
Warning: This information may contain mistakes. You are ultimately responsible for
verification. Revised: 5/25/2004
6 - Scapulohumeral Muscles (intrinsic shoulder)
Axillary n. (C5,6)
 Deltoid (abduct, medial, and lateral rotation)
Lower Subscapular n. (C5,6)
 Teres Major (adduct, medial rotation, & assists in extension)
4 - Rotator Cuff Muscles:
Suprascapular n. (C5,6)
 Supraspinatus (1st 15 of abduction, fixes head of humerus)
 Infraspinatus (lateral rotation, fixes head & weak adductor)
Axillary n. (C5,6)
 Teres Minor (lateral rotation, fixes head & weak adductor)
Upper & Lower Subscapular n. (C5,6)
 Subscapularis (med rotator, adductor, & fixes head)
3 -Bicipital Groove
(Lateral to medial at bicipital groove)
 Pectoralis Major
 Latissimus Dorci
 Teres Major
Todd Glass
Fall 2003