Posterior Back Muscles

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Biology

Anatomy

Last updated 5:26 PM on 11/29/22
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22 Terms

1
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levator scapulae
elevates and adducts scapula
elevates and adducts scapula
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Coracobrachialis
flexes and adducts arm
flexes and adducts arm
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deltoid
abducts arm
abducts arm
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Supraspinatus
abducts arm
abducts arm
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Subscapularis
medially rotates arm
medially rotates arm
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latissimus dorsi
Extends, adducts, and medially rotates the arm; draws the shoulder downward and backward
Extends, adducts, and medially rotates the arm; draws the shoulder downward and backward
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Infraspinatus
rotates arm laterally
rotates arm laterally
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teres minor
rotates arm laterally
rotates arm laterally
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rhomboid major
adducts scapula
adducts scapula
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teres major
extends, adducts, and medially rotates arm
extends, adducts, and medially rotates arm
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Trapezius
Elevates, depresses, retracts, and rotates the scapula; rotates the arm
Elevates, depresses, retracts, and rotates the scapula; rotates the arm
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Trapezius
O=occipital bone, C1-7, T1-12 spinous process; I= acromion process of scapula; Raise arm, raise & rotate scapula, extend head
O=occipital bone, C1-7, T1-12 spinous process; I= acromion process of scapula; Raise arm, raise & rotate scapula, extend head
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levator scapulae
O = transverse processes of C1-C4; I = medial margin of scapula; to raise scapula
O = transverse processes of C1-C4; I = medial margin of scapula; to raise scapula
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Deltoid
O=acromion process and spine of scapula & clavicle; I=lateral edge of humerus; Abducts arm
O=acromion process and spine of scapula & clavicle; I=lateral edge of humerus; Abducts arm
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Rhomboideus major
O= spinous process of thoracic vertebrae; I= medial border of scapula; raise, adduct & retract scapula
O= spinous process of thoracic vertebrae; I= medial border of scapula; raise, adduct & retract scapula
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Teres major
O=lateral border of scapula; I=intertubercular groove of humerus; extends, adducts & medially rotates arm
O=lateral border of scapula; I=intertubercular groove of humerus; extends, adducts & medially rotates arm
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Teres minor
O: lateral border of scapula;
I: greater tubercle of humerus; laterally rotates arm
O: lateral border of scapula; I: greater tubercle of humerus; laterally rotates arm
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Infraspinatus
O= posterior surface of scapula below spine; I=greater tubercle; rotates arm laterally
O= posterior surface of scapula below spine; I=greater tubercle; rotates arm laterally
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Supraspinatus
O= posterior scapula above spine; I=greater tubercle; abducts arm
O= posterior scapula above spine; I=greater tubercle; abducts arm
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Subscapularis
O=anterior side of scapula; I=lesser tubercle; rotates arm medially
O=anterior side of scapula; I=lesser tubercle; rotates arm medially
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Lattisimus dorsi
O=vertebral column; I=intertubercular groove of humerus; extends, adducts, and medially rotates arm
O=vertebral column; I=intertubercular groove of humerus; extends, adducts, and medially rotates arm
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Coracobrachialis
O=coracoid process of scapula; I=shaft of humerus; flexes and adducts arm
O=coracoid process of scapula; I=shaft of humerus; flexes and adducts arm