Sets 3-5 Review Muscles of the Trunk

Muscles of the Trunk Multifidus Multifidus External intercostales External intercostales Serratus anterior Serratus anterior Levator scapulae Levator scapulae Subscapularis Subscapularis Infraspinatus Infraspinatus Supraspinatus Supraspinatus Teres minor Teres minor Teres major Teres major Rhomboideus major Rhomboideus major Rhomboideus minor Rhomboideus minor Lumbodorsal fascia Lumbodorsal fascia Latissimus dorsi Latissimus dorsi Pectoralis minor Pectoralis minor Pectoralis major Pectoralis major Trapezius Trapezius Did not build: Rectus abdominis Rectus abdominis External obliques External obliques

TrapeziusName: Action: “sexy shoulder” muscle; power muscle that pulls the scapula (shoulder) back, lifts upward and rotates Name: Action: Latissimus dorsi “power-stroke” muscle; power muscle attached to the lumbodorsal fascia; extends and adducts the humerus

Rectus abdominis Name: Action: “six-pack” muscle; flexes vertebral column and compresses abdomen Name: Action: External obliques flexes vertebral column and lateral flexion

Pectoralis minor Name: Action: draws scapula forward and down Name: Action: Pectoralis major “ pledge of allegiance” muscle; power muscle that rotates, extends, and adducts arm across chest and shoulder forward; uppercut in boxing; tennis swing

Serratus anterior Name: Action: “pushing” muscle; draws scapula forward and down; bench pressing, throwing, swimming Name: Action: External intercostales inhale; elevate ribs

MultifidusName: Action: “ rope of muscle”; flexion, extension, and rotation of spine Name: Action: Levator scapulae “shrugging.. I don’t know” muscle; elevates scapula

Rhomboideus major Name: Action: raises and adducts scapula Name: Action: Rhomboideous minor retracts the scapula (shoulder) and rotates downward

Lumbodorsal Fascia Name: Action: diamond-shaped fascia; increases surface area for large muscle attachment Name: Action:Subscapularis rotator cuff; rotates the head of the humerus medially (internal rotation – point thumb down);

SupraspinatusName: Action: rotator cuff; Name: Action:Infraspinatus rotator cuff;

Teres minor Name: Action: rotator cuff; Name: Action: Teres major adduct and medial rotates humerus; assists latissimus dorsi