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ANAT&PHYS 337 > Muscles that Act on the Glenohumeral Joint to Move the Arm > Flashcards

Muscles that Act on the Glenohumeral Joint to Move the Arm Flashcards

1
Q

latissimus dorsi - actions

A

extend, adduct, & medially rotate GH joint (“swimmer muscle”)

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2
Q

latissimus dorsi - insertion

A

intertubercular groove of humerus

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3
Q

latissimus dorsi - innervation

A

thoracodorsal nerve

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4
Q

pectoralis major - action

A

arm flexion; adducts and medially rotates GH joint

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5
Q

pectoralis major - insertion

A

intertubercular groove of humerus

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6
Q

pectoralis major - innervation

A

lateral and medial pectoral nerves

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7
Q

deltoid - actions

A

anterior fibers = flex and medially rotate GH joint
middle fibers = abduction GH joint
posterior fibers = extend and laterally rotate GH joint

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8
Q

deltoid - insertion

A

deltoid tuberosity of humerus

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9
Q

deltoid - innervation

A

axillary nerve

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10
Q

coracobrachialis - action

A

adducts and flexes GH joint

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11
Q

coracobrachialis - origin

A

coracoid process

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12
Q

coracobrachialis - insertion

A

middle medial shaft of humerus

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13
Q

coracobrachialis - innervation

A

musculocutaneous nerve

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14
Q

teres major - action

A

extends, adducts, and medially rotates GH joint

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15
Q

teres major - origin

A

inferior lateral border and inferior angle of scapula

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16
Q

teres major - insertion

A

lesser tubercle and intertubercular groove of humerus

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17
Q

teres major - innervation

A

lower subscapular nerve

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18
Q

triceps brachii - action

A

extend GH joint

19
Q

triceps brachii - origin

A

infraglenoid tubercle

20
Q

triceps brachii - insertion

A

olecranon process

21
Q

triceps brachii - innervation

A

radial nerve

22
Q

biceps brachii - action

A

flexes GH joint

23
Q

biceps brachii - origin

A

supraglenoid tubercle

24
Q

biceps brachii - insertion

A

radial tuberosity and bicipital aponerurosis

25
Q

biceps brachii - innervation

A

musculocutaneous nerve

26
Q

subscapularis - action

A

(rotator cuff) medially rotates GH, stabilizes GH joint

27
Q

subscapularis - origin

A

subscapular fossa

28
Q

subscapularis - insertion

A

lesser tubercle of humerus

29
Q

subscapularis - innervation

A

upper and lower subscapular nerves

30
Q

supraspinatus - action

A

(rotator cuff) abducts GH joint, stabilizes GH joint

31
Q

supraspinatus - origin

A

supraspinous fossa

32
Q

supraspinatus - insertion

A

greater tubercle of humerus

33
Q

supraspinatus - innervation

A

suprascapular nerve

34
Q

infraspinatus - action

A

(rotator cuff) adducts and laterally rotates GH joint, stabilizes GHJ

35
Q

infraspinatus - origin

A

infraspinous fossa

36
Q

infraspinatus - insertion

A

greater tubercle of humerus

37
Q

infraspinatus - innervation

A

suprascapular nerve

38
Q

teres minor - action

A

(rotator cuff) adducts and laterally rotates GH joint, stabilizes GHJ

39
Q

teres minor - origin

A

superior lateral border of scapula

40
Q

teres minor - insertion

A

greater tubercle of humerus

41
Q

teres minor - innervation

A

axillary nerve

42
Q

supraspinatus and infraspinatus - blood supply

A

suprascapular artery

43
Q

triceps brachii - blood supply

A

deep brachial artery

ANAT&PHYS 337 (33 decks)

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