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Muscular System: Shoulder Girdle OIA
BI 301L: Anatomy and Physiology (Portland State University)
18
Anatomy
Undergraduate 3
10/21/2011

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Cards

Term
Pectoralis minor origin
Definition

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Origin: Ribs 3-5 and overlaying fascia

Term
Pectoralis minor insertion
Definition

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Insertion: coracoid process of scapula

Term
Pectoralis minor action
Definition

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Action: Draws scapula laterally and forward (around chest wall), laterally rotates and depresses scapula.

Term
Serratus anterior origin
Definition

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Origin: All or nearly all ribs

Term
Serratus anterior insertion
Definition

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Insertion: medial border of scapula

Term
Serratus anterior action
Definition

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Action: draws scapula laterally and forward (around chest wall), protracts, laterally rotates scapula

Term
Trapezius origin
Definition

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Origin: external occipital protuberance, medial 1/3 of superior nuchal line, nuchal ligament, spinous processes of C7-T3 or T4

Term
Trapezius insertion
Definition

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Insertion: acromion and spine of scapula, lateral 1/3 of clavicle

Term
Trapezius action
Definition

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Action: elevates and depresses scapula, laterally rotates and retracts scapula

Term
Levator scapulae origin
Definition

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Origin:transverse processes of C1-C4

Term
Levator scapulae insertion
Definition

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Insertion: superior angle to medial border of scapula

Term
Levator scapulae action
Definition

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Action: elevates scapula, flexes neck laterally, retracts scapula and braces shoulder, medially rotates scapula

Term
Rhomboid major origin
Definition

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Origin: spinous processes of vertebare T2-T5

Term
Rhomboid major insertion
Definition

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Insertion: medial border of scapula

Term
Rhomboid major action
Definition

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Action:retracts and medially rotates scapula

Term
Rhomboid minor origin
Definition

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Origin: spinous processes of vertebrae C7-T1, nuchal ligament

Term
Rhomboid minor insertion
Definition

[image]

Insertion: medial border of scapula

Term
Rhomboid minor action
Definition

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Action: retracts and medially rotates scapula

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