Muscles that move the scapula
If you were to cut the dorsal scapular n., which muscles would no longer function?
1. Levator scapulae m. 2. Rhomboid minor 3. Rhomboid minor
What muscles protract (abduct) the scapula?
1. Serratus anterior 2. Pectoralis minor m. 3. Coracobrachialis
Superficial muscles that move the scapula
1. Trapezius - elevate, depress, adduct scapula 2. Latissimus dorsi m. - adduct scapula 3. Levator scapulae m. - elevate scapula 4. Rhomboid minor - elevate and adduct scapula 5. Rhomboid major - elevate and adduct scapula 6. Serratus anterior m. - abducts (protracts) and rotates scapula, keeps medial border of scapula opposed to thoracic wall 7. Pectoralis minor m. - protracts and depresses scapular
What muscles elevate the scapula?
1. Trapezius m. 2. Levator scapulae m. 3. Rhomboid minor 4. Rhomboid minor
What muscles retract (adduct) the scapula?
1. Trapezius m. 2. Rhomboid minor 3. Rhomboid minor 4. Latissimus dorsi m.
Rhomboid major m.
Inferior to minor O: SPs' of T2-T5 I: medial border of scapula A: elevate and adduct scapula N: dorsal scapular n. ADL: archery
Levator scapulae m.
O: TP's atlas, axis, C3, and C4 I: superior portion of the medial border of the scapula A: elevate scapula, flex neck N: dorsal scapular n. **Origin and insertion depend on action - expound ADL: cradling the phone on one shoulder
Serratus anterior m.
O: external surface of the first 8-9 ribs I: anterior surface of vertebral border of scapula A: pulls scapula forward (abducts) and rotates scapula, keeps medial border of scapula opposed to thoracic wall N: long thoracic n. ADL: punching/boxing
Trapezius
O: medial aspect of superior nuchal line, EOP, ligamentum nuchae, SP's C7-T12 I: lateral 1/3 clavicle, acromion, spine of scapula A: elevate, depress, retract (adduct) scapula, hyperextend the neck, brace the shoulder N: spinal root of CN XI, ventral rami of C3, 4
Pectoralis minor m.
O: superior margin, external surface sternal (lateral) ends of ribs 3,4 and 5 I: coracoid process of scapula A: pulls scapula forward (protracts) and down (depress) N: medial pectoral n.
Rhomboid minor m.
Superior to major O: SP's of C7 and T1 I: medial border of scapula A: elevate and adduct scapula N: dorsal scapular n. ADL: archery
Name the muscles that will:
These will be **TQs
What muscles depress the scapula?
Trapezius m.
Latissimus dorsi m. means "wide back muscle"
Widest muscle in the body O: SP's of T6 to sacrum, iliac crest, inferior 4 ribs (and inferior angle of the scapula) I: crest of lesser tubercle of humerus and floor of intertubercular groove (Pectoralis m. inserts laterally, Teres major m. inserts medially: P.L.T) A: Humerus - extend, adduct and medially rotate Scapula - retract (adduct) the scapula N: thoracodorsal nerve ADL: Rowing, chopping, pull ups
