Muscles that move the scapula – Flashcards
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Superficial muscles that move the scapula
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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
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Trapezius
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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
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Latissimus dorsi m.
means "wide back muscle"
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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
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Levator scapulae m.
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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
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Rhomboid minor m.
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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
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Rhomboid major m.
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Inferior to minor
O: SPs' of T2-T5
I: medial border of scapula
A: elevate and adduct scapula
N: dorsal scapular n.
ADL: archery
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Serratus anterior m.
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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
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Pectoralis minor m.
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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.
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Name the muscles that will:
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These will be **TQs
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What muscles elevate the scapula?
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1. Trapezius m.
2. Levator scapulae m.
3. Rhomboid minor
4. Rhomboid minor
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What muscles depress the scapula?
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Trapezius m.
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What muscles protract (abduct) the scapula?
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1. Serratus anterior
2. Pectoralis minor m.
3. Coracobrachialis
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What muscles retract (adduct) the scapula?
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1. Trapezius m.
2. Rhomboid minor
3. Rhomboid minor
4. Latissimus dorsi m.
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If you were to cut the dorsal scapular n., which muscles would no longer function?
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1. Levator scapulae m.
2. Rhomboid minor
3. Rhomboid minor
