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Anatomy > Unit 4: Upper Extremity > Flashcards

Unit 4: Upper Extremity Flashcards

1
Q

What are the actions of the superior fibers of the trapezius? (2)

A

Elevate and superiorly rotate scapula.

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2
Q

What are the actions of the middle fibers of the trapezius?

A

Retract scapula.

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3
Q

What are the actions of the inferior fibers of the trapezius?

A

Depress scapula.

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4
Q

What innervates the trapezius?

A

Accessory nerve (CN XI).

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5
Q

Where does the trapezius originate?

A

On the occipital bone, cervical and thoracic spinous processes.

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6
Q

Where does the trapezius insert?

A

On the clavicle and scapula.

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7
Q

What is the action of the levator scapulae? (2)

A

Elevates and inferiorly rotates scapula.

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8
Q

Where does the levator scapulae originate?

A

Upper cervical transverse processes.

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9
Q

Where does the levator scapulae insert?

A

Superior medial border of scapula.

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10
Q

What muscles does the dorsal scapular nerve innervate? (3)

A
  1. Levator scapulae. 2. Rhomboid major. 3. Rhomboid minor.
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11
Q

What are the actions of rhomboid major and minor? (3)

A
  1. Elevates, 2. retracts, and 3. inferiorly rotates scapula.
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12
Q

Where do the rhomboid major and minor originate?

A

On the spinious processes.

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13
Q

Where does the rhomboid major insert?

A

Medial border of scapula.

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14
Q

Where does the rhomboid minor insert?

A

Superior medial border of scapula.

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15
Q

What are the actions of the pectoralis minor?

A

Protract and depress scapula.

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16
Q

Where does the pectoralis minor originate?

A

On the ribs.

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17
Q

Where does the pectoralis minor insert?

A

Coracoid process of scapula.

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18
Q

Where nerve innervates the pectoralis minor?

A

Medial pectoral nerve.

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19
Q

What are the actions of the serratus anterior? (2)

A
  1. Protracts and superiorly rotates scapula. 2. Stabilizes scapula.
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20
Q

Where does the serratus anterior originate?

A

On the ribs.

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21
Q

Where does the serratus anterior insert?

A

On the anterior medial border of the scapula.

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22
Q

What nerve innervates the serratus anterior?

A

Long thoracic nerve.

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23
Q

What are the actions of the subclavius? (2)

A

Stabilizes and depresses clavicle.

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24
Q

Where does the subclavius originate?

A

On the ribs.

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25
Q

Where does the subclavius insert?

A

On the inferior surface of the clavicle.

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26
Q

What nerve innervates the subclavius?

A

Nerve to subclavius.

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27
Q

What are the actions of the latissimus dorsi? (3)

A

Extends, adducts & medially rotates glenohumeral joint joint.

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28
Q

Where does the latissimus dorsi originate?

A

On the ribs.

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29
Q

Where does the latissimus dorsi insert?

A

On the intertubercular groove of humerus.

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30
Q

What nerve innervates the latissimus dorsi?

A

Thoracodorsal nerve.

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31
Q

What are the actions of the pectoralis major? (2)

A
  1. Arm flexion. 2. Adducts and medially rotates GH joint.
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32
Q

Where does the pectoralis major originate?

A

On the clavicle, ribs, and sternum.

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33
Q

Where does the pectoralis major insert?

A

On the intertubercular groove of humerus.

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34
Q

What nerve innervates the pectoralis major?

A

Lateral pectoral and medial pectoral nerves.

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35
Q

What actions do the anterior fibers of the deltoid perform? (2)

A

Flex and medially rotate GH joint.

36
Q

What actions do the middle fibers of the deltoid perform?

A

GH abduction.

37
Q

What actions do the posterior fibers of the deltoid perform? (2)

A

Extend and laterally rotate GH Joint.

38
Q

Where is the origin of the deltoid?

A

On the clavicle and sternum.

39
Q

Where is the insertion of the deltoid?

A

Deltoid tuberosity of humerus.

40
Q

What nerve innervates of the deltoid?

A

Axillary nerve.

41
Q

What actions does the coracobrachialis perform? (2)

A

Adducts and flexes GH joint.

42
Q

Where is the origin of the coracobrachialis?

A

Coracoid process.

43
Q

Where is the insertion of the coracobrachialis?

A

Middle medial shaft of humerus.

44
Q

What nerve innervates the coracobrachialis?

A

Musculocutaneous nerve.

45
Q

What actions does the teres major perform? (3)

A

Extends, adducts, and medially rotates GH joint.

46
Q

Where is the origin of the teres major?

A

Inferior lateral border and inferior angle of scapula.

47
Q

Where is the insertion of the teres major?

A

Lesser tubercle and intertubercular groove of humerus.

48
Q

What nerve innervates the teres major?

A

Lower subscapular nerve.

49
Q

What actions does the triceps brachii perform on the GH joint?

A

Extends GH joint.

50
Q

Where is the origin of the triceps brachii?

A

Infraglenoid tubercle.

51
Q

Where is the insertion of the triceps brachii?

A

Olecranon process.

52
Q

What nerve innervates the triceps brachii?

A

Radial nerve.

53
Q

What are the actions of the biceps brachii on the GH joint?

A

Flexes GH joint.

54
Q

Where is the origin of the biceps brachii?

A

Supraglenoid tubercle.

55
Q

Where is the insertion of the biceps brachii?

A

Radial tuberosity and bicipital aponeurosis.

56
Q

What nerve innervates the biceps brachii?

A

Musculocutaneous nerve.

57
Q

What are the actions of the subscapularis? (2)

A
  1. Medially rotates GH joint. 2. Stabilizes the GH joint.
58
Q

Where is the origin of the subscapularis?

A

Subscapular fossa.

59
Q

Where is the insertion of the subscapularis?

A

Lesser tubercle of humerus.

60
Q

What nerve innervates the subscapularis?

A

Upper and lower subscapular nerves.

61
Q

What are the actions of the supraspinatus? (2)

A
  1. Abducts GH joint. 2. Stabilizes the GH joint.
62
Q

Where is the origin of the supraspinatus?

A

Supraspinous fossa.

63
Q

Where is the insertion of the supraspinatus?

A

Greater tubercle of humerus.

64
Q

What nerve innervates the supraspinatus?

A

Suprascapular nerve.

65
Q

What are the actions of the infraspinatus and teres minor? (2)

A
  1. Adducts and laterally rotates GH joint. 2. Stabilize the GH joint.
66
Q

Where is the origin of the infraspinatus?

A

Infraspinous fossa.

67
Q

Where is the insertion of the supraspinatus, infraspinatus, and teres minor?

A

Greater tubercle of humerus.

68
Q

What innervates the infraspinatus?

A

Suprascapular nerve.

69
Q

What is the origin of the teres minor?

A

Superior lateral border of scapula.

70
Q

What nerve innervates the teres minor?

A

Axillary nerve.

71
Q

What muscles form the rotator cuff? (4) (SITS)

A
  1. Subscapularis. 2. Supraspinatus. 3. Infraspinatus. 4. Teres minor.
72
Q

What artery supplies the tapezius?

A

Dorsal scapular artery.

73
Q

What artery supplies the deltoid?

A

Posterior Circumflex Humeral Artery.

74
Q

What artery supplies the teres major?

A

Circumflex Scapular Artery.

75
Q

What artery supplies the lattisimus dorsi?

A

Thoracodorsal Artery.

76
Q

What artery supplies the supraspinatous and infraspinatus?

A

Suprascapular Artery.

77
Q

What artery supplies the teres minor?

A

Circumflex Scapular Artery.

78
Q

What artery supplies the subscapularis?

A

Subscapular Artery.

79
Q

What arteries supply the serratus anterior? (2)

A
  1. Lateral Thoracic Artery. 2. Thoracodorsal Artery.
80
Q

What artery supplies the pectoralis major and minor?

A

Thoracoacromial Trunk (Pectoral Branch).

81
Q

What artery supplies the subclavius?

A

Thoracoacromial Trunk (Clavicular Branch).

82
Q

What artery supplies the levator scapulae, rhomboid major, and minor?

A

Dorsal Scapular Artery.

83
Q

What artery supplies the triceps brachii?

A

Deep Brachial Artery.

84
Q

What artery supplies the coracobrachialis and biceps brachii?

A

Brachial Artery.

85
Q

What artery supplies the brachialis and brachioradialis?

A

Radial (Recurrent) Artery.

Anatomy (38 decks)

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