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Muscles > Pectoral Muscles > Flashcards

Pectoral Muscles Flashcards

1
Q

Action at pectoral girdle: depression

A

Pectoralis minor, trapezius

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2
Q

Action at pectoral girdle: protraction

A

Pectoralis minor, serratus anterior

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3
Q

Action at pectoral girdle: retraction

A

Trapezius, rhomboid major and minor

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4
Q

Action at pectoral girdle: lateral rotation

A

Serratus anterior, trapezius

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5
Q

Action at pectoral girdle: medial rotation

A

Levator scapulae, rhomboid major and minor

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6
Q

Pectoralis major

A

Adducts medially rotates humerus, flexes humerus

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7
Q

Pectoralis minor

A

Protracts , depresses, stabilizes scapula

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8
Q

Serratus anterior

A

Protracts scapula, rotates scapula laterally/upward

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9
Q

Subclavius

A

Anchors and depresses clavicle

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10
Q

Action at glenohumeral joint: flexion

A

Deltoid, pectoralis major, coracobrachialis, short head of biceps brachii

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11
Q

Action at glenohumeral joint: extension

A

Deltoid, latissimus dorsi, teres major, long head of triceps brachii

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12
Q

Action at glenohumeral joint: abduction

A

Supraspinatus (initiates and assists in first 15 degrees), deltoid (fully effective after first 15 degrees)

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13
Q

Action at glenohumeral joint: adduction

A

Pectoralis major, latissimus dorsi, teres major, long head of triceps brachii

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14
Q

Action at glenohumeral joint: internal (medial) rotation

A

Deltoid, pectoralis major, latissimus dorsi, teres major, subscapularis

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15
Q

Action at glenohumeral joint: external (lateral) rotation

A

Deltoid, infraspinatus, teres minor

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16
Q

Deltoid

A

Flexes and medially rotates arm, abducts arm, extends and laterally rotates arm

17
Q

Teres major

A

Adducts and medially rotates arm

18
Q

Supraspinatus

A

Initiates and assists deltoid in abduction of arm

19
Q

Infraspinatus

A

Lateral rotation of arm

20
Q

Action at pectoral girdle: elevation

A

Trapezius, levator scapulae

21
Q

Teres minor

A

Lateral rotation of arm

22
Q

Subscapularis

A

Medially rotates and adducts arm

Muscles (4 decks)

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